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Your Position: Home - Other Auto Parts - Best Truck Accessories for Your Pickup - The Home Depot

Best Truck Accessories for Your Pickup - The Home Depot

Author: Geym

Jun. 09, 2025

Best Truck Accessories for Your Pickup - The Home Depot

Best Truck Accessories for Your Pickup

Last updated September 7,

If you are looking for more details, kindly visit our website.

Even the toughest trucks need a helping hand at times. The top truck accessories let you showcase a style that’s all your own. Whether you’re shopping to upgrade your truck for work or leisure, use this guide to learn more about the best truck accessories for your vehicle.

When shopping for truck tool boxes, you can find a range of styles including heavy-duty, slide-out varieties, strong chests and underbody aluminum tool boxes. In general, the larger the tool box, and the more it's custom-fitted to your truck, the more you’ll pay. Most models lock, but heavy-duty styles provide extra security.

SHOP TRUCK ACCESSORIES NOW

Buying GuideAutomotive DIY Auto Repair & MaintenanceAuto AccessoriesGarage

Table of Contents

  1. Truck Bed Accessories

  2. Deflectors

  3. Tailgates, Bumpers and Bars

  4. Additional Accessories

Truck Bed Accessories

Truck Tool Boxes:

  • The best truck tool boxes keep your essentials safe and organized. Top styles include heavy-duty chest tool boxes, side-mount tool boxes, underbody boxes, tool boxes designed to fit over your wheel well and more. A variety of sizes makes it easy to find options for every size vehicle and collection of tools.

Truck Bed Covers:

  • The best truck bed covers secure your truck and safeguard your belongings. Available in an assortment of styles, like aluminum, classic black and no-bolt, you can get the level of protection you need in a matter of minutes with these truck bed accessories.
  • Heavy-duty truck bed covers made from fiberglass or aluminum provide the best protection for harsh weather conditions. They also reduce the risk of theft if you carry expensive tools in your truck on a regular basis. For light duty, soft tonneau and roll-up covers provide ample protection.
  • The best truck bed caps and covers also keep your paint job from fading due to harsh winter weather and summer sun.

Truck Bed Liners:

  • Finally, floor liners can be custom fit to your truck. These liners protect the bed from moisture and keep dirt and grime from grinding into the paint.
  • Tailgate extenders and durable, non-slip, rubber truck bed liners add even more value to your work vehicle.

Deflectors

Window Deflectors:

  • Made to keep air flowing while reducing wind noise, window deflectors are great if you travel to various jobs in your truck. Window deflectors shield the window from rain so you can keep the window cracked when it's raining, and they also protect your truck from dirt and grime, since they’re easy to wash and clean. These come in a range of styles, including four-piece sets for all of your windows and deflectors designed to work with your sunroof. Smoke gray, classic chrome and sleek black help you get the look you want.
  • For most truck owners, universal window deflectors made for a range of similarly sized vehicles will work well and keep costs down. If you use your truck for messy work often, kit-style deflectors allow you to customize your truck your way.

Bug Deflectors:

  • If you spend enough time in your truck on the open road, you’ll accumulate bug-related grime on your vehicle. Protect your truck and keep it sparkling with bug deflectorsb designed for your hood. The deflectors will also help your engine and the inside of your truck stay cleaner. Many styles were created to match window deflectors for a clean, classic appearance.
  • You can find bug deflectors made specifically for your vehicle, and styles for popular trucks are easy to install. Universal bug defectors and those with more ornate designs are also available to help you customize your truck.

Tailgates, Bumpers and Bars

Tailgate Replacements and Accessories:

  • Over time, your tailgate can start to show signs of wear. With vented tailgates and solid tailgate replacements, you can get your truck back in tip-top shape. Tailgate extenders also expand the functionality of your truck. Tailgate accessories like lowering kits, hitches, handles, lock kits and more help you get the most out of your truck.
  • Universal tailgates are a common choice, and they work with a variety of truck models. Unique options like vented and louvered tailgates allow you to customize the space to your work needs.

Bumpers:

  • A well-used truck stands up to lots of work. Soon enough, your bumper might also start to show serious signs of wear. You don’t have to head to the dealership for a replacement. Instead, choose from a selection of bumpers and bumper products to revive your truck and make it extra-durable in the process. You can also find bumper accessories like brush protectors and license plate mounting brackets.
  • When choosing a bumper, you’ll need a model made specifically for your car. Front bumper, rear bumper assemblies and related accessories are also available.

Bull Bars and Grille Guards:

  • The front of your truck can get scratched, dented and generally banged up in a hurry. Whether you’re working on the ranch or on a construction site, bull bars and grille guards provide proper protection for your front end. Shop for a range of sizes to fit your truck and make it even tougher. Look for models that feature an LED light bar to give your truck a little extra flash in the process.
  • Bull bars and grille guards are made to fit a wide variety of trucks, and in most cases, a universal option will serve you well. Heavy-duty models, as well as those wired with lighting, tend to cost a bit extra.

Additional Accessories

Fender Flares and Lining:

  • Made to keep your wheels from muddying your truck or damaging the finish with rocks and debris, fender flares and linersf are a practical addition to many work vehicles. These are some of the coolest truck accessories, especially when you pick a bold design. Available in sets to fit your whole truck or as individual pieces, finding options for your model is easy at The Home Depot. Look for bolt-on varities for long-term durability and better protection.

Running Boards and Nerf Bars:

  • RRunning boards and nerf bars make your truck more functional while providing a unique style to your favorite vehicle. Available in heavy-duty models for serious work, there are a number of options designed for a unique aesthetic. Running boards feature no-slip rubber which aids in safety getting in and out of the truck. High-tech options like powered running boards to take your truck to the next level.
  • Choosing the right running board typically depends on your overall cab length. The Home Depot has running boards for most standard and extended size cabs.
  • Nerf bars are also designed to fit a certain size vehicle. Available in standard options like 4-inch and 5-inch nerf bars, we’ve made it easy for you to find the size that works for your pickup. Choose from a range of styles for a look that fits your aesthetic once you find the correct size.

Cowl Panels:

  • Like a lot of parts on a truck, regular use and hard work can take its toll. Eventually, water damage can lead to rust, and debris buildup can lead to serious wear. With replacement cowl panelsc, you can continue to protect your truck from things like small rocks on the road. Find a selection of cowl panels and parts made to fit your truck today.
  • Cowl panels are typically made for a range of popular truck models. Switching them out is also a fairly simple process you can tackle in an afternoon.

Update your vehicle with the best pickup truck accessories from The Home Depot. You can also shop The Home Depot Mobile App for everything from organizational tools to essentials like tailgates, fender flares and a selection of the best truck seat covers. You'll find everything you need to turn your truck’s performance and style up a notch.

Buyer's Guide Test (Please Post Opinions!) - Comanche Club Forums

This is the thread I'll be posting my buyer's guide tests into. I'm looking for opinions on formatting, etc. that would make this as easy to read as possible. I want this to be a community effort so any and all opinions, concerns, comments, drunken ramblings, insults, and repentances are welcome here. This is by no means representative of what this will actually end up looking like.


Regular CC text: Arial 14pt

Here's some bare-bones sample text that's not complete and probably looks stupid as well but this is just a proof of concept. The drivetrain section is pretty universal so it probably isn't a very good indicator of something specific to Comanches! I'm just getting opinions on the formatting for now!
 


 

Jeep Comanche Buyer's Guide
(main title, arial 36pt)

Disclaimer: This guide contains information and dates specific to the Jeep Comanche (MJ) and dates in this guide reflect Jeep Comanche (-) model years only.


 


Drivetrain
(subtitle, arial 24pt)


 


Engines
(Subsection title, arial 18pt)
 


2.1L Renault J8S I4 Diesel (, early ?): The rarest by far of the available engines. Although this engine has a poor reputation and parts are extremely scarce, many Comanche Club members consider 2.1L-equipped Comanches highly desirable due to their rarity (less than 100 diesel Comanches are estimated to exist in the United States). The 2.1L is a belt-driven overhead camshaft engine.

Diesel Comanche owners: Automan, jeepcomj (former), opsled (former), I'm probably forgetting a few.

Power output: 87hp, ?? ft-lbs

4.0L AMC 242 I6 (-): The final version of AMC's Inline 6 design, the 4.0L engine is well known for its reliablility and power output. Models years - featured a French-developed Renix injection system, an advanced system for its time. However, the Renix system's major disadvantage is its trouble-prone electrical system. For and , an improved Chrysler fuel injection system was introduced. The 4.0L engine is considered by far the most desirable of the available Comanche engine choices. The 4.0L is a chain-driven overhead valve engine that does not require regular timing maintenance.

Power output: 173 HP/220 ft-lb (), 177 HP/224 ft-lb (-), 190 HP/225ft-lb (-92)

 
Transmissions
(Subsection title)


Aisin-Warner AW4 (-): The only automatic transmission found behind the 4.0L engine (as well as some + 2.5L engines), the 4-speed computer-controlled AW4 has an excellent reputation for reliability and power handling. From to , this transmission featured a selectable "Power/Comfort" switch on the dash that adjusts shift points. Later AW4 units are permanently wired in the "Power" position. The AW4 is prone to overheating, so the installation of an external transmission cooler (writeup link goes here) is recommended. The AW4 is designed for Dexron-Mercon transmission fluid only.

Gear ratios:
1: 2.804
2: 1.531
3: 1.00
4: 0.753
R: ??


 
Aisin AX-15 (.5 (more exact date of introduction?)-): The 5-speed manual option found behind the 4.0L engine from late to , this transmission is considered more reliable than the Peugeot BA-10/5 that it replaced. Brass syncromeshes necessitates use of sulfur-free gear oil. Redline MT-90 fluid is recommended. Work in progress etc
 
Gear ratios:
1:
2:
3:
4:
5:
R:


Transfer Cases
To be completed


Axles

Front Axles

2WD Beam (-): All 2-wheel-drive Comanches feature a one-piece metal shaft in place of a driven axle.

Dana 30 (-): The front axle used in all 4-wheel-drive Comanches, the Dana 30 is considered adequate for light to moderate off-road use with tires of up to 33-inch diameter.

Gear ratios: To be completed

 

Rear Axles
(sub subsection title, itallic standard text)


Comanche rear axles, due to its spring-under-axle construction, have spring perches mounted in different locations from an equivalent Cherokee axle. (more swap info to come)

AMC-20 (): Differentiated from other axles by a perfectly round cover, the AMC-20 is rarely found in Comanches with the Metric Ton package. The MJ AMC-20 is considered similar in strength to the Dana 44, although it enjoys far less aftermarket support and is less well known.

Gear ratios:
To be completed

Dana 35 (-): The standard rear axle used in Comanches not featuring the Metric Ton package. This axle is considered to be adequate for on-road use as well as light off-road use. The Dana 35 is prone to axle shaft and differential failure under high-stress situations. Some Dana 35 units feature a Trak-Lok limited slip differential.

Gear ratios:
2.5L, manual: 4.10
2.5L, automatic: 4.56
4.0L, manual: 3.07
4.0L, automatic: 3.55

Dana 44 (-): By far the most desirable factory rear axle, the Dana 44 is found under - Comanches with the Metric Ton package. It is far more durable than the Dana 35 under all circumstances, and is capable of supporting tires as large as 38" without significant risk of failure. As with the Dana 35, some units feature limited slip differentials.

Gear ratios:
To be completed

Up Next: Renix vs HO elaboration, filling it out with an introduction

Good ideas. More information is coming soon. Obviously this is an extremely early test phase and I won't/can't get every piece of information in one iteration. Breaking up gear ratios more is a good idea, and I'll go ahead and put that in. Here's some more stuff about engines and transmissions!

Jeep Comanche Buyer's Guide

v0.02

Disclaimer: This guide contains information and dates specific to the Jeep Comanche (MJ) and dates in this guide reflect Jeep Comanche (-) model years only.

Outline

1: Introduction

2: Overview

3: Maintenance Information

4: Issues and Solutions

5: Conclusion



Part 2: Overview


I: Drivetrain

Engines
 


2.1L Renault J8S I4 Turbo Diesel (, early ): The rarest by far of the available engines. Although this engine has a poor reputation and parts are extremely scarce, many Comanche Club members consider 2.1L-equipped Comanches highly desirable due to their rarity (less than 100 diesel Comanches are estimated to exist in the United States). The 2.1L is a belt-driven overhead camshaft engine.

Diesel Comanche owners: Automan, jeepcomj (former), opsled (former), I'm probably forgetting a few.

Power output: 87hp, ?? ft-lbs

2.5L AMC 150 I4 (-): The standard and most common engine found in the Comanche throughout its production, the 2.5L engine is based on the highly reliable AMC Inline 6 family of engines. It was offered in two major generations during its production run. Although lacking in power compared to 6-cylinder engines, 2.5L engines are considered strong for their size and are expected to last well past 200,000 miles if well maintained. The manufacturer specifies 10W-30 motor oil, but recommendations vary. The 2.5L is a chain-driven overhead valve engine that does not require regular timing maintenance.

- Renault-Bendix Throttle Body Injection (-): A fairly simple and reliable single-port injection system, the 2.5L TBI was Renault-Bendix's first Jeep engine control system. It is considerably simpler than Multi-Point Injection systems and is not prone to as many electrical issues as a contemporary 4.0L engine.

- Mopar 'Power Tech' Multi-Point Injection (-): An updated system similar in design to the system used in the 4.0L engine, the Mopar 2.5L engine is similar in many respects to the 4.0L version and much of the same information applies.

Fluid capacity: 4 qt.

Power output: 117 HP/ 139 ft-lb (-), 130 HP/ 149 ft-lb (-)

2.8L General Motors LR2 V6 (): The original 6-cylinder option in Comanches, the 2.8L engine featured an unreliable carburetor and failure-prone oiling systems, tarnishing its reputation in the Jeep community. With its low power output, poor reliability, and marginal fuel economy compared to later engines, Comanches with the 2.8L engine are considered some of the least desirable examples. Despite its poor reputation, some 2.8L engines are known to have lasted well past 200,000 miles.

Fluid capacity: 4.5 qt.

Power output: 110 HP/150 ft-lb ()

4.0L AMC 242 I6 (-): The legendarily reliable successor to the 258 inline 6, the 4.0L engine appeared in Comanches in two different generations, with a great deal of difference between the two. The manufacturer specifies 10W-30 motor oil, but a wide variety of recommendations can be found. Due to their high zinc content (which an engine of this vintage was designed for), diesel engine oils are frequently recommended. 4.0L engines are generally expected to easily reach 200,000 miles without rebuilding if well maintained. The 4.0L is a chain-driven overhead valve engine that does not require regular timing maintenance.

- Renault-Bendix (Renix) Multi-Point Injection (-): The first iteration of the 4.0L engine's fuel injection system, the French-developed Renix engine control system was considered quite advanced for its time and is in some ways more complex than its successor. Although a significant improvement on the electronic carburetors used by its predecessors, the Renix system is prone to electrical issues, particularly revolving around its insufficient chassis grounds. The Renix system does not feature easily testable diagnostics. Certain tools can interface with this system, but it does not store trouble codes, requiring testing while the engine is running. Although the Renix system is more prone to electrical issues, a well cared for Renix example can equal a Mopar engine in reliability.

- Mopar 'Power Tech' (High Output) Multi-Point Injection (-): A significant upgrade to the previous Renix system, the Mopar system eliminates the knock sensor, EGR valve, a number of vacuum lines and adds first generation On-Board Diagnostics (OBD1) controlled through a 'Check Engine' light. The electrical system of this engine is considerably more robust than the Renix system, with far fewer ground-related issues. Revised cylinder heads and intake manifolds considerably increased high-end power at the expense of a higher torque peak.

Fluid capacity: 6 qt.


Power output: 173 HP/220 ft-lb (), 177 HP/224 ft-lb (-), 190 HP/225 ft-lb (-92)

 
Transmissions

Chrysler TorqueFlite 904 (): The only automatic transmission option for the model year and the only Chrysler transmission used in Comanches, this 3-speed automatic was paired to some 2.8L and 2.5L engines. Although quite reliable, it was replaced for by the computer-controlled AW4. The manufacturer specifies ATF+3 fluid, which is no longer in production. Substitute ATF+4 fluid.

Fluid capacity: 8-11qt. split between fluid pan and torque converter. Verify fill level using dipstick.

Gear ratios:

1: 2.45

2: 1.45

3: 1.00

R: ??

Aisin-Warner AW4 (-): The only automatic transmission found behind the 4.0L engine (as well as some + 2.5L engines), the 4-speed computer-controlled AW4 has an excellent reputation for reliability and power handling. From to , this transmission featured a selectable "Power/Comfort" switch on the dash that adjusts shift points. Later AW4 units are permanently wired in the "Power" position. The AW4 is prone to overheating, so the installation of an external transmission cooler (writeup link goes here) is recommended. The AW4 is designed for Dexron-Mercon transmission fluid only.

Fluid capacity: 8-10 qt. split between torque converter and fluid pan. Verify fill level using dipstick.

Gear ratios:
1: 2.804
2: 1.531
3: 1.00
4: 0.753
R: 2.39

(omitting Borg-Warner T5, no proof has been found of its use in MJs)

Aisin AX-4/AX-5 (-?): The manual transmission options for the 2.1L, 2.5L, and 2.8L engines, the AX-4 and AX-5 are light-duty transmissions considered sufficient for the output of their engines. While both transmissions are essentially the same design, the AX-5 features an added fifth overdrive gear for highway use. 10W-30 motor oil (regular or synthetic) is specified by the manufacturer, but Pennzoil Syncromesh and Redline MT-90 fluids are also frequently recommended. DO NOT lubricate Aisin manual transmissions with GL-5 gear oil, as the transmissions feature brass synchromesh units that will be destroyed by standard gear oils.

Fluid capacity: 3.3 qt.

Gear ratios:

1: 3.92
2: 2.33
3: 1.44
4: 1.00
5 (AX-5): 0.85
R: 4.74

Peugeot BA-10/5 (-.5):

Aisin AX-15 (.5-): The 5-speed manual transmission option found behind 4.0L engines after late . The AX-15 is a medium-duty manual transmission that is considered adequate for the 4.0L engine's power output. As with the AX-4 and AX-5, the manufacturer specifies 10W-30 motor oil, but Pennzoil Synchromesh and Redline MT-90 fluids are frequently recommended. DO NOT lubricate Aisin manual transmissions with GL-5 gear oil, as the transmissions feature brass synchromesh units that will be destroyed by standard gear oils.

Fluid capacity: 3.3 qt.
 
Gear ratios:
1: 3.83
2: 2.33
3: 1.44
4: 1.00
5: 0.79
R: 4.22


Transfer Cases
To be completed


Axles

Front Axles

Axle stuff later.


Gear ratios:
2.5L, 5-speed manual: 4.10
2.5L, 4-speed manual: 3.55
2.5L, 3-speed automatic: 4.56
4.0L, 5-speed manual: 3.07
4.0L, 4-speed automatic: 3.55


Up Next: Finishing up drivetrains, adding some actual MJ specific information

Terribly sorry for the hiatus in updates - hopefully it won't last long. This time, I've incorporated some of your suggestions (for example, I hid those evil, evil gear ratios behind spoiler tags. Think of the children!) and started the year breakdown since that seems to be a pretty popular request. More will come tomorrow.

This is the part where you all get to contribute! I'd like to have pics of trucks from each model year, preferably showing the visual differences between the years. Mostly stock trucks would be preferred but anything that identifies a truck as a particular year is wanted. Grille shots, engine bay shots, anything unique to a particular model year. Send me your pics!

Jeep Comanche Buyer's Guide

v0.03

Disclaimer: This guide contains information and dates specific to the Jeep Comanche (MJ) and dates in this guide reflect Jeep Comanche (-) model years only.

Outline

1: Introduction

2: Overview

3: Maintenance Information

4: Issues and Solutions

5: Conclusion

6: Credits (this is where all of the major contributors will be listed, including anyone who contributes pics)

Part 1: Introduction

Part 2: Overview

I: Model Year Breakdown

Although the Comanche was only offered for a short period of time, it went through many iterations, with significant changes occurring each model year. Each model year is widely considered an improvement over the previous year.

: Often considered the "odd duck" year, Comanches are considered the least desirable, mostly due to the. Despite this, the 2.5L engine, when paired with a manual transmission, is similar to its - counterparts and is quite useful. All Comanches are fitted with the 7-foot long bed.

: A significant improvement over the model year. The carbureted 2.8L engine was replaced by the multi-point injected 4.0L inline six, and the 3-speed TorqueFlite 727 was replaced by an Aisin-Warner 4-speed. 4.0L engines could also come equipped with the somewhat troublesome Peugeot BA-10/5 transmission.

: The most widely produced model year, brought relatively few changes. (??)

: (no C101 connector blah blah AX-15 blah blah)

: (what changed for ?)

: Besides , the model year brought the most drastic changes to the Comanche. Both the 2.5L and 4.0L engines received significant upgrades, with the 2.5L engine receiving multi-point fuel injection similar to that of the 4.0L engine, and the 4.0L engine's fuel injection system was upgraded substantially. Comanches feature On-Board Diagnostics (OBD I), interfaced through a check engine light. Cosmetic changes were significant, including several new colors and a new front fascia. The SporTruck package also received a significant facelift, and became quite rare.

A stock SporTruck in Silver Star Metallic paint, one of the paint colors introduced that year.

: The final model year for the Comanche, and the most desirable. Changes for were cosmetic, with a new color (Hunter Green Metallic) and a new graphics package (Sport) introduced.

II: Drivetrain

Engines
 


2.1L Renault J8S I4 Turbo Diesel (, early ): The rarest by far of the available engines. Although this engine has a poor reputation and parts are extremely scarce, many Comanche Club members consider 2.1L-equipped Comanches highly desirable due to their rarity (less than 100 diesel Comanches are estimated to exist in the United States). The 2.1L is a belt-driven overhead camshaft engine.

Diesel Comanche owners: Automan, jeepcomj (former), opsled (former), I'm probably forgetting a few.

Power output: 87hp, 132 ft-lbs

2.5L AMC 150 I4 (-): The standard and most common engine found in the Comanche throughout its production, the 2.5L engine is based on the highly reliable AMC Inline 6 family of engines. It was offered in two major generations during its production run. Although lacking in power compared to 6-cylinder engines, 2.5L engines are considered strong for their size and are expected to last well past 200,000 miles if well maintained. The manufacturer specifies 10W-30 motor oil, but recommendations vary. The 2.5L is a chain-driven overhead valve engine that does not require regular timing maintenance.

- Renault-Bendix Throttle Body Injection (-): A fairly simple and reliable single-port injection system, the 2.5L TBI was Renault-Bendix's first Jeep engine control system. It is considerably simpler than Multi-Point Injection systems and is not prone to as many electrical issues as a contemporary 4.0L engine.

- Mopar 'Power Tech' Multi-Point Injection (-): An updated system similar in design to the system used in the 4.0L engine, the Mopar 2.5L engine is similar in many respects to the 4.0L version and much of the same information applies.

Fluid capacity: 4 qt.

Power output: 117 HP/ 139 ft-lb (-), 130 HP/ 149 ft-lb (-)

2.8L General Motors LR2 V6 (): The original 6-cylinder option in Comanches, the 2.8L engine featured an unreliable carburetor and failure-prone oiling systems, tarnishing its reputation in the Jeep community. With its low power output, poor reliability, and marginal fuel economy compared to later engines, Comanches with the 2.8L engine are considered some of the least desirable examples. Despite its poor reputation, some 2.8L engines are known to have lasted well past 200,000 miles. The 2.8L is a chain-driven overhead valve engine that does not require regular timing maintenance.

Fluid capacity: 4.5 qt.

Power output: 110 HP/150 ft-lb ()

4.0L AMC 242 I6 (-): The legendarily reliable successor to the 258 inline 6, the 4.0L engine appeared in Comanches in two different generations, with a great deal of difference between the two. The manufacturer specifies 10W-30 motor oil, but a wide variety of recommendations can be found. Due to their high zinc content (which an engine of this vintage was designed for), diesel engine oils are frequently recommended. 4.0L engines are generally expected to easily reach 200,000 miles without rebuilding if well maintained. The 4.0L is a chain-driven overhead valve engine that does not require regular timing maintenance.

- Renault-Bendix (Renix) Multi-Point Injection (-): The first iteration of the 4.0L engine's fuel injection system, the French-developed Renix engine control system was considered quite advanced for its time and is in some ways more complex than its successor. Although a significant improvement on the electronic carburetors used by its predecessors, the Renix system is prone to electrical issues, particularly revolving around its insufficient chassis grounds. The Renix system does not feature easily testable diagnostics. Certain tools can interface with this system, but it does not store trouble codes, requiring testing while the engine is running. Although the Renix system is more prone to electrical issues, a well cared for Renix example can equal a Mopar engine in reliability.

- Mopar 'Power Tech' (High Output) Multi-Point Injection (-): A significant upgrade to the previous Renix system, the Mopar system eliminates the knock sensor, EGR valve, a number of vacuum lines and adds first generation On-Board Diagnostics (OBD1) controlled through a 'Check Engine' light. The electrical system of this engine is considerably more robust than the Renix system, with far fewer ground-related issues. Revised cylinder heads and intake manifolds considerably increased high-end power at the expense of a higher torque peak.

Fluid capacity: 6 qt.

Power output: 173 HP/220 ft-lb (), 177 HP/224 ft-lb (-), 190 HP/225 ft-lb (-92)


Transmissions

Chrysler TorqueFlite 904 (): The only automatic transmission option for the model year and the only Chrysler transmission used in Comanches, this 3-speed automatic was paired to some 2.8L and 2.5L engines. Although quite reliable, it was replaced for by the computer-controlled AW4. The manufacturer specifies ATF+3 fluid, which is no longer in production. Substitute ATF+4 fluid.

Fluid capacity: 8-11qt. split between fluid pan and torque converter. Verify fill level using dipstick.

Gear ratios:

1: 2.45

2: 1.45

3: 1.00

R: ??

Aisin-Warner AW4 (-): The only automatic transmission found behind the 4.0L engine (as well as some + 2.5L engines), the 4-speed computer-controlled AW4 has an excellent reputation for reliability and power handling. From to , this transmission featured a selectable "Power/Comfort" switch on the dash that adjusts shift points. Later AW4 units are permanently wired in the "Power" position. The AW4 is prone to overheating, so the installation of an external transmission cooler (writeup link goes here) is recommended. The AW4 is designed for Dexron-Mercon transmission fluid only.

Fluid capacity: 8-10 qt. split between torque converter and fluid pan. Verify fill level using dipstick.

Gear ratios:

1: 2.804
2: 1.531
3: 1.00
4: 0.753
R: 2.39

(omitting Borg-Warner T5, no proof has been found of its use in MJs)

Aisin AX-4/AX-5 (-): The manual transmission options for the 2.1L, 2.5L, and 2.8L engines, the AX-4 and AX-5 are light-duty transmissions considered sufficient for the output of their engines. While both transmissions are essentially the same design, the AX-5 features an added fifth overdrive gear for highway use. 10W-30 motor oil (regular or synthetic) is specified by the manufacturer, but Pennzoil Syncromesh and Redline MT-90 fluids are also frequently recommended. DO NOT lubricate Aisin manual transmissions with GL-5 gear oil, as the transmissions feature brass synchronizers that will be destroyed by standard gear oils.

Fluid capacity: 3.3 qt.

Gear ratios:

1: 3.92
2: 2.33
3: 1.44
4: 1.00
5 (AX-5): 0.85
R: 4.74

Peugeot BA-10/5 (-.5):

Aisin AX-15 (.5-): The 5-speed manual transmission option found behind 4.0L engines after late . The AX-15 is a medium-duty manual transmission that is considered adequate for the 4.0L engine's power output. As with the AX-4 and AX-5, the manufacturer specifies 10W-30 motor oil, but Pennzoil Synchromesh and Redline MT-90 fluids are frequently recommended. DO NOT lubricate Aisin manual transmissions with GL-5 gear oil, as the transmissions feature brass synchronizers that will be destroyed by standard gear oils.

Fluid capacity: 3.3 qt.
 
Gear ratios:

1: 3.83
2: 2.33
3: 1.44
4: 1.00
5: 0.79
R: 4.22


Transfer Cases

New Process 207 ():

New Process 228 ():

New Process 231 (-):

Shift Pattern: 2WD - 4WD (Part Time) - N - 4WD Low

New Process 242 (-):
 

Shift Pattern: 2WD - 4WD (Part Time) - 4WD (Full Time) - N - 4WD Low


Axles

Dana 30 (-): The only front axle to equip Comanches, the Dana 30 (or D30) is considered a highly reliable axle well-suited for light to moderate off-road use. 2 wheel drive models will feature a solid beam in place of this axle.

Dana 35 (-):

AMC 20 ():

Dana 44 (-):

Final Drive (axle) ratios:
2.5L, 5-speed manual: 4.10
2.5L, 4-speed manual: 3.55
2.5L, 3-speed automatic: 4.56
4.0L, 5-speed manual: 3.07
4.0L, 4-speed automatic: 3.55


Up Next: Completing the year breakdown and adding visual aids. More drivetrain info.

Here's the promised update for today.

Jeep Comanche Buyer's Guide

v0.04

Disclaimer: This guide contains information and dates specific to the Jeep Comanche (MJ) and dates in this guide reflect Jeep Comanche (-) model years only.

Outline

1: Introduction

2: Overview

3: Maintenance Information

4: Issues and Solutions

5: Conclusion

6: Credits (this is where all of the major contributors will be listed, including anyone who contributes pics)

It is advised for new Comanche owners to read the Introduction and Issues and Solutions sections before others. The Overview section contains a large amount of information that may be overwhelming to new or prospective Comanche owners!

Part 1: Introduction

I: What this guide is for

This guide is designed to be a comprehensive, yet relatively simple introduction to the Jeep Comanche, providing information that new owners and interested buyers will need to know. This guide is not intended to be a complete resource for every detail of these vehicles, but rather an easy to understand overview that still contains the most important details. While as many important aspects will be covered as possible, the newest Comanche is now twenty two years old, and conditions vary wildly. If you are purchasing a Comanche or have purchased one recently, you are encouraged to familiarize yourself with the vehicle and its quirks. This guide is intended to help you along in doing so. With that said, you don't need to read the entire guide - in fact doing so may be overwhelming at first glance!

This guide is mainly intended to cover stock trucks, so some specifications will vary if your vehicle has been modified.

II: What this guide isn't for

This guide isn't an owner's manual - the information here is mainly intended to get new Comanche owners started with the basics. This isn't a guide for setting up your truck for wheeling, in fact virtually none of this guide involves modifying the truck at all.

III: A brief history lesson

Part 2: Overview

I: Basic Specifications


II: Model Year Breakdown

Although the Comanche was only offered for a short period of time, it went through many iterations, with significant changes occurring each model year. Each model year is widely considered an improvement over the previous year.

: Often considered the "odd duck" year, Comanches are considered the least desirable, mostly due to some key differences in the engine bay, as well as its weak 2.8L engine. Despite this, the 2.5L engine, when paired with a manual transmission, is similar to its - counterparts and is an excellent engine. All Comanches are fitted with the 7-foot long bed.

: A significant improvement over the model year. The carbureted 2.8L engine was replaced by the multi-point injected 4.0L inline six, and the 3-speed TorqueFlite 727 was replaced by an Aisin-Warner 4-speed. 4.0L engines could also come equipped with the somewhat troublesome Peugeot BA-10/5 manual transmission. 100 "Street Comanches" were produced, with the 4.0L engine, a manual transmission, and special racing-style cosmetic body parts.

: The most widely produced model year, brought relatively few changes. The 10-slot grille was replaced by an 8-slot grille, and the 4.0L engine received a slight power upgrade. A special edition, the Olympic Edition, was offered.

: (no C101 connector blah blah AX-15 blah blah)

Zhenlonghui are exported all over the world and different industries with quality first. Our belief is to provide our customers with more and better high value-added products. Let's create a better future together.

: (what changed for ?)

: Besides , the model year brought the most drastic changes to the Comanche. Both the 2.5L and 4.0L engines received significant upgrades, with the 2.5L engine receiving multi-point fuel injection similar to that of the 4.0L engine, and the 4.0L engine's fuel injection system was upgraded substantially. Comanches feature On-Board Diagnostics (OBD I), interfaced through a check engine light. Cosmetic changes were significant, including several new colors and a new front fascia. The SporTruck package also received a significant facelift, and became quite rare.

A stock SporTruck in Silver Star Metallic paint, one of the paint colors introduced that year.

: The final model year for the Comanche, and the most desirable. Changes for were cosmetic, with a new color (Hunter Green Metallic) and a new graphics package (Sport) introduced.

III: Drivetrain

Engines
 


2.1L Renault J8S I4 Turbo Diesel (, early ): The rarest by far of the available engines. Although this engine has a poor reputation and parts are extremely scarce, many Comanche Club members consider 2.1L-equipped Comanches highly desirable due to their rarity (less than 100 diesel Comanches are estimated to exist in the United States). The 2.1L is a belt-driven overhead camshaft engine.

Diesel Comanche owners: Automan, opsled/jeepcoMJ (former),

Power output: 87hp, 132 ft-lbs

2.5L AMC 150 I4 (-): The standard and most common engine found in the Comanche throughout its production, the 2.5L engine is based on the highly reliable AMC Inline 6 family of engines. It was offered in two major generations during its production run. Although lacking in power compared to 6-cylinder engines, 2.5L engines are considered strong for their size and are expected to last well past 200,000 miles if well maintained. The manufacturer specifies 10W-30 motor oil, but recommendations vary. The 2.5L is a chain-driven overhead valve engine that does not require regular timing maintenance.

- Renault-Bendix Throttle Body Injection (-): A fairly simple and reliable single-port injection system, the 2.5L TBI was Renault-Bendix's first Jeep engine control system. It is considerably simpler than Multi-Point Injection systems and is not prone to as many electrical issues as a contemporary 4.0L engine.

- Mopar 'Power Tech' Multi-Point Injection (-): An updated system similar in design to the system used in the 4.0L engine, the Mopar 2.5L engine is similar in many respects to the 4.0L version and much of the same information applies.

Fluid capacity: 4 qt.

Power output: 117 HP/ 139 ft-lb (-), 130 HP/ 149 ft-lb (-)

2.8L General Motors LR2 V6 (): The original 6-cylinder option in Comanches, the 2.8L engine featured an unreliable carburetor and failure-prone oiling systems, tarnishing its reputation in the Jeep community. With its low power output, poor reliability, and marginal fuel economy compared to later engines, Comanches with the 2.8L engine are considered some of the least desirable examples. Despite its poor reputation, some 2.8L engines are known to have lasted well past 200,000 miles. The 2.8L is a chain-driven overhead valve engine that does not require regular timing maintenance.

Fluid capacity: 4.5 qt.

Power output: 110 HP/150 ft-lb ()

4.0L AMC 242 I6 (-): The legendarily reliable successor to the 258 inline 6, the 4.0L engine appeared in Comanches in two different generations, with a great deal of difference between the two. The manufacturer specifies 10W-30 motor oil, but a wide variety of recommendations can be found. Due to their high zinc content (which an engine of this vintage was designed for), diesel engine oils such as Shell Rotella T5 are frequently recommended. 4.0L engines are generally expected to easily reach 200,000 miles without rebuilding if well maintained. The 4.0L is a chain-driven overhead valve engine that does not require regular timing maintenance.

The 4.0L engine existed in two forms:

- Renault-Bendix (Renix) Multi-Point Injection (-): The first iteration of the 4.0L engine's fuel injection system, the French-developed Renix engine control system was considered quite advanced for its time and is in some ways more complex than its successor. Although a significant improvement on the electronic carburetors used by its predecessors, the Renix system is prone to electrical issues, particularly revolving around its insufficient chassis grounds. The Renix system does not feature easily testable diagnostics. Certain tools can interface with this system, but it does not store trouble codes, requiring testing while the engine is running. Although the Renix system is more prone to electrical issues, a well cared for Renix example can equal a Mopar engine in reliability.

- Mopar 'Power Tech' (High Output) Multi-Point Injection (-): A significant upgrade to the previous Renix system, the Mopar system eliminates the knock sensor, EGR valve, a number of vacuum lines and adds first generation On-Board Diagnostics (OBD1) controlled through a 'Check Engine' light. The electrical system of this engine is considerably more robust than the Renix system, with far fewer ground-related issues. Revised cylinder heads and intake manifolds considerably increased high-end power at the expense of a higher torque peak.

Fluid capacity: 6 qt.

Power output: 173 HP/220 ft-lb (), 177 HP/224 ft-lb (-), 190 HP/225 ft-lb (-92)


Transmissions

Chrysler TorqueFlite 904 (): The only automatic transmission option for the model year and the only Chrysler transmission used in Comanches, this 3-speed automatic was paired to some 2.8L and 2.5L engines. Although quite reliable, it was replaced for by the computer-controlled AW4. The manufacturer specifies ATF+3 fluid, which is no longer in production. Substitute ATF+4 fluid.

Fluid capacity: 8-11qt. split between fluid pan and torque converter. Verify fill level using dipstick.

Gear ratios:

1: 2.45

2: 1.45

3: 1.00

R: ??

Aisin-Warner AW4 (-): The only automatic transmission found behind the 4.0L engine (as well as some + 2.5L engines), the 4-speed computer-controlled AW4 has an excellent reputation for reliability and power handling. From to , this transmission featured a selectable "Power/Comfort" switch on the dash that adjusts shift points. Later AW4 units are permanently wired in the "Power" position. The AW4 is prone to overheating, so the installation of an external transmission cooler (writeup link goes here) is recommended. The AW4 is designed for Dexron-Mercon transmission fluid only.

Fluid capacity: 8-10 qt. split between torque converter and fluid pan. Verify fill level using dipstick.

Gear ratios:

1: 2.804
2: 1.531
3: 1.00
4: 0.753
R: 2.39

Aisin AX-4/AX-5 (-): The manual transmission options for the 2.1L, 2.5L, and 2.8L engines, the AX-4 and AX-5 are light-duty transmissions considered sufficient for the output of their engines. While both transmissions are essentially the same design, the AX-5 features an added fifth overdrive gear for highway use. 10W-30 motor oil (regular or synthetic) is specified by the manufacturer, but Pennzoil Syncromesh and Redline MT-90 fluids are also frequently recommended. DO NOT lubricate Aisin manual transmissions with GL-5 gear oil, as the transmissions feature brass synchronizers that will be destroyed by standard gear oils.

Fluid capacity: 3.3 qt.

Gear ratios:

1: 3.92
2: 2.33
3: 1.44
4: 1.00
5 (AX-5): 0.85
R: 4.74

Peugeot BA-10/5 (-.5):

Aisin AX-15 (.5-): The 5-speed manual transmission option found behind 4.0L engines after late . The AX-15 is a medium-duty manual transmission that is considered adequate for the 4.0L engine's power output. As with the AX-4 and AX-5, the manufacturer specifies 10W-30 motor oil, but Pennzoil Synchromesh and Redline MT-90 fluids are frequently recommended. DO NOT lubricate Aisin manual transmissions with GL-5 gear oil, as the transmissions feature brass synchronizers that will be destroyed by standard gear oils.

Fluid capacity: 3.3 qt.
 
Gear ratios:

1: 3.83
2: 2.33
3: 1.44
4: 1.00
5: 0.79
R: 4.22


Transfer Cases

New Process 207 ():

New Process 228 ():

New Process 231 (-): The standard transfer case for all non- trucks, the NP231 is a simple, manually shifted, chain driven transfer case. The 231 is considered more than strong enough for any stock drivetrain. The NP231 is designed to use Dexron-Mercon transmission fluid.

Shift Pattern: 2WD - 4WD (Part Time) - N - 4WD Low

New Process 242 (-): The "full-time" transfer case for -, the NP242 is similar to the NP231 except for the addition of a full-time 4WD option, allowing for the use of 4 wheel drive on surfaces with good traction. As with the NP231, the 242 is designed to use Dexron-Mercon transmission fluid.
 

Shift Pattern: 2WD - 4WD (Part Time) - 4WD (Full Time) - N - 4WD Low


Axles

Dana 30 (-): The only front axle to equip Comanches, the Dana 30 (or D30) is considered a highly reliable axle well-suited for light to moderate off-road use. 2 wheel drive models will feature a solid beam in place of this axle.

Dana 35 (-):

AMC 20 ():

Dana 44 (-):

Final Drive (axle) ratios:

2.5L or 2.8L, 5-speed manual: 4.10:1
2.5L, 4-speed manual: 3.55:1
2.5L or 2.8L, 3 or 4-speed automatic: 4.56:1
4.0L, 5-speed manual: 3.07:1
4.0L, 4-speed automatic: 3.55:1

Part 3: Maintenance Information

Part 4: Common Issues and Solutions

I: Rust

Since the newest Comanche is now 22 years old, rust is simply a fact of life for all but the most well-cared-for examples. Comanches operated in areas of high road salt use are particularly prone to rusting, with vehicles in deserts or temperate climates (such as the Southern United States) least prone to rust.

Floor Pans: Virtually all Comanches are expected to have at least some rust here, and this is generally the first place a Comanche rusts. If the vehicle has not been meticulously checked for leaks during its entire lifespan, water can (and will) leak onto the floor pans and collect under the carpet without any place to go. Depending on how the vehicle has been stored, rust will range from minor surface damage to complete destruction of the vehicle's floor. A number of methods to repair floor pans exist, including ready-made patch panels, although these are often of extremely poor quality.

Rocker Panels: Generally the first place rust is visible to the naked eye, rocker panel rust occurs mostly as a result of road conditions or poor maintenance. A number of methods to repair rocker panels exist.

Rear Wheel Wells: After a Comanche rusts in its rocker panels, the rear wheel arches are generally the next areas to go. Salt, mud and other debris builds up behind the rear tire, and if allowed to sit uncleaned, will eventually destroy the area around the rear fender flares. Due to the Comanche's rarity, repairs to the bed will generally have to consist of either cut-out sheet metal sections from other Comanches or custom fabrication work.

Part 5: Conclusion

Part 6: Credits

Up next: Finishing the overview and common issues. I still need pics.

Here is a very small update. More will come later.

Jeep Comanche Buyer's Guide

v0.05

Disclaimer: This guide contains information and dates specific to the Jeep Comanche (MJ) and dates in this guide reflect Jeep Comanche (-) model years only.

Outline

1: Introduction

2: Overview

3: Maintenance Information

4: Issues and Solutions

5: Conclusion

6: Credits (this is where all of the major contributors will be listed, including anyone who contributes pics)

It is advised for new Comanche owners to read the Introduction and Issues and Solutions sections before others. The Overview section contains a large amount of information that may be overwhelming to new or prospective Comanche owners!

Part 1: Introduction

I: What this guide is for

This guide is designed to be a comprehensive, yet relatively simple introduction to the Jeep Comanche, providing information that new owners and interested buyers will need to know. This guide is not intended to be a complete resource for every detail of these vehicles, but rather an easy to understand overview that still contains the most important details. While as many important aspects will be covered as possible, the newest Comanche is now twenty two years old, and conditions vary wildly. If you are purchasing a Comanche or have purchased one recently, you are encouraged to familiarize yourself with the vehicle and its quirks. This guide is intended to help you along in doing so. With that said, you don't need to read the entire guide - in fact doing so may be overwhelming at first glance!

This guide is mainly intended to cover stock trucks, so some specifications will vary if your vehicle has been modified.

II: What this guide isn't for

This guide isn't an owner's manual - the information here is mainly intended to get new Comanche owners started with the basics. This isn't a guide for setting up your truck for wheeling, in fact virtually none of this guide involves modifying the truck at all.

III: A brief history lesson

Part 2: Overview

I: Basic Specifications


II: Model Year Breakdown

Although the Comanche was only offered for a short period of time, it went through many iterations, with significant changes occurring each model year. Each model year is widely considered an improvement over the previous year.

: Often considered the "odd duck" year, Comanches are considered the least desirable, mostly due to some key differences in the engine bay, as well as its weak 2.8L engine. Despite this, the 2.5L engine, when paired with a manual transmission, is similar to its - counterparts and is an excellent engine. All Comanches are fitted with the 7-foot long bed. Comanches are typically identified by an uppercase fender badge.

A stock Custom. Note the long bed and uppercase 'COMANCHE' badge.

: A significant improvement over the model year. The carbureted 2.8L engine was replaced by the multi-point injected 4.0L inline six, and the 3-speed TorqueFlite 727 was replaced by an Aisin-Warner 4-speed. 4.0L engines could also come equipped with the somewhat troublesome Peugeot BA-10/5 manual transmission. 100 "Street Comanches" were produced, with the 4.0L engine, a manual transmission, and special racing-style cosmetic body parts.

: The most widely produced model year, brought relatively few changes. The 10-slot grille was replaced by an 8-slot grille, and the 4.0L engine received a slight power upgrade. A special edition, the Olympic Edition, was offered.

: (no C101 connector blah blah AX-15 blah blah)

: (what changed for ?)

: Besides , the model year brought the most drastic changes to the Comanche. Both the 2.5L and 4.0L engines received significant upgrades, with the 2.5L engine receiving multi-point fuel injection similar to that of the 4.0L engine, and the 4.0L engine's fuel injection system was upgraded substantially. Comanches feature On-Board Diagnostics (OBD I), interfaced through a check engine light. and later gauge clusters are fully electronic, lacking a speedometer cable. Cosmetic changes were significant, including several new colors and a new front fascia. The SporTruck package also received a significant facelift, and became quite rare.

A stock SporTruck in Silver Star Metallic paint, one of the paint colors introduced that year.

: The final model year for the Comanche, and the most desirable. Changes for were cosmetic, with a new color (Hunter Green Metallic) and a new graphics package (Sport) introduced.

III: Drivetrain

Engines
 


2.1L Renault J8S I4 Turbo Diesel (, early ): The rarest by far of the available engines. Although this engine has a poor reputation and parts are extremely scarce, many Comanche Club members consider 2.1L-equipped Comanches highly desirable due to their rarity (less than 100 diesel Comanches are estimated to exist in the United States). The 2.1L is a belt-driven overhead camshaft engine.

Diesel Comanche owners: Automan, opsled/jeepcoMJ (former),

Power output: 87hp, 132 ft-lbs

2.5L AMC 150 I4 (-): The standard and most common engine found in the Comanche throughout its production, the 2.5L engine is based on the highly reliable AMC Inline 6 family of engines. It was offered in two major generations during its production run. Although lacking in power compared to 6-cylinder engines, 2.5L engines are considered strong for their size and are expected to last well past 200,000 miles if well maintained. The manufacturer specifies 10W-30 motor oil, but recommendations vary. The 2.5L is a chain-driven overhead valve engine that does not require regular timing maintenance.

- Renault-Bendix Throttle Body Injection (-): A fairly simple and reliable single-port injection system, the 2.5L TBI was Renault-Bendix's first Jeep engine control system. It is considerably simpler than Multi-Point Injection systems and is not prone to as many electrical issues as a contemporary 4.0L engine. and model year vehicles with this engine have a '2.5 Litre' badge on the tailgate.

- Mopar 'Power Tech' Multi-Point Injection (-): An updated system similar in design to the system used in the 4.0L engine, the Mopar 2.5L engine is similar in many respects to the 4.0L version and much of the same information applies. Vehicles with this engine do not have a badge on the tailgate.

Fluid capacity: 4 qt.

Power output: 117 HP/ 139 ft-lb (-), 130 HP/ 149 ft-lb (-)

2.8L General Motors LR2 V6 (): The original 6-cylinder option in Comanches, the 2.8L engine featured an unreliable carburetor and failure-prone oiling systems, tarnishing its reputation in the Jeep community. With its low power output, poor reliability, and marginal fuel economy compared to later engines, Comanches with the 2.8L engine are considered some of the least desirable examples. Despite its poor reputation, some 2.8L engines are known to have lasted well past 200,000 miles. The 2.8L is a chain-driven overhead valve engine that does not require regular timing maintenance. Vehicles equipped with the 2.8L engine have a 'V6-2.8L' badge on the tailgate.

2.8L engine bay. Note the carburetor and small radiator.

Fluid capacity: 4.5 qt.

Power output: 110 HP/150 ft-lb ()

4.0L AMC 242 I6 (-): The legendarily reliable successor to the 258 inline 6, the 4.0L engine appeared in Comanches in two different generations, with a great deal of difference between the two. The manufacturer specifies 10W-30 motor oil, but a wide variety of recommendations can be found. Due to their high zinc content (which an engine of this vintage was designed for), diesel engine oils such as Shell Rotella T5 are frequently recommended. 4.0L engines are generally expected to easily reach 200,000 miles without rebuilding if well maintained. The 4.0L is a chain-driven overhead valve engine that does not require regular timing maintenance.

The 4.0L engine existed in two forms:

- Renault-Bendix (Renix) Multi-Point Injection (-): The first iteration of the 4.0L engine's fuel injection system, the French-developed Renix engine control system was considered quite advanced for its time and is in some ways more complex than its successor. Although a significant improvement on the electronic carburetors used by its predecessors, the Renix system is prone to electrical issues, particularly revolving around its insufficient chassis grounds. The Renix system does not feature easily testable diagnostics. Certain tools can interface with this system, but it does not store trouble codes, requiring testing while the engine is running. Although the Renix system is more prone to electrical issues, a well cared for Renix example can equal a Mopar engine in reliability. Vehicles with the Renix 4.0L engine have a '4.0 Litre' badge on the tailgate.

- Mopar 'Power Tech' (High Output) Multi-Point Injection (-): A significant upgrade to the previous Renix system, the Mopar system eliminates the knock sensor, EGR valve, a number of vacuum lines and adds first generation On-Board Diagnostics (OBD1) controlled through a 'Check Engine' light. The electrical system of this engine is considerably more robust than the Renix system, with far fewer ground-related issues. Revised cylinder heads and intake manifolds considerably increased high-end power at the expense of a higher torque peak. Vehicles with the Mopar 4.0L engine have a '4.0 Litre HIGH OUTPUT' badge on the tailgate.

Fluid capacity: 6 qt.

Power output: 173 HP/220 ft-lb (), 177 HP/224 ft-lb (-), 190 HP/225 ft-lb (-92)


Transmissions

Chrysler TorqueFlite 904 (): The only automatic transmission option for the model year and the only Chrysler transmission used in Comanches, this 3-speed automatic was paired to some 2.8L and 2.5L engines. Although quite reliable, it was replaced for by the computer-controlled AW4. The manufacturer specifies ATF+3 fluid, which is no longer in production. Substitute ATF+4 fluid.

Fluid capacity: 8-11qt. split between fluid pan and torque converter. Verify fill level using dipstick.

Gear ratios:

1: 2.45

2: 1.45

3: 1.00

R: ??

Aisin-Warner AW4 (-): The only automatic transmission found behind the 4.0L engine (as well as some + 2.5L engines), the 4-speed computer-controlled AW4 has an excellent reputation for reliability and power handling. From to , this transmission featured a selectable "Power/Comfort" switch on the dash that adjusts shift points. Later AW4 units are permanently wired in the "Power" position. The AW4 is prone to overheating, so the installation of an external transmission cooler (writeup link goes here) is recommended. The AW4 is designed for Dexron-Mercon transmission fluid only.

Fluid capacity: 8-10 qt. split between torque converter and fluid pan. Verify fill level using dipstick.

Gear ratios:

1: 2.804
2: 1.531
3: 1.00
4: 0.705 (-90) 0.753 (-92)
R: 2.39

Aisin AX-4/AX-5 (-): The manual transmission options for the 2.1L, 2.5L, and 2.8L engines, the AX-4 and AX-5 are light-duty transmissions considered sufficient for the output of their engines. While both transmissions are essentially the same design, the AX-5 features an added fifth overdrive gear for highway use. 10W-30 motor oil (regular or synthetic) is specified by the manufacturer, but Pennzoil Syncromesh and Redline MT-90 fluids are also frequently recommended. DO NOT lubricate Aisin manual transmissions with GL-5 gear oil, as the transmissions feature brass synchronizers that will be destroyed by standard gear oils.

Fluid capacity: 3.3 qt.

Gear ratios:

1: 3.92
2: 2.33
3: 1.44
4: 1.00
5 (AX-5): 0.85
R: 4.74

Peugeot BA-10/5 (-.5): The 5-speed manual transmission found behind 4.0L engines from to mid . The BA-10/5 is a light-duty manual transmission that is considered inadequate for the 4.0L engine's power output if not driven carefully. While many owners have seen success with this transmission, it is considered inferior to the later AX-15 transmissions. The BA-10/5 can be identified by a square shaped drain plug that few tools will fit. The BA-10/5 is designed for standard gear oil.

Fluid capacity: 2.45 qt.

Gear ratios:

1: 3.39

2: 2.33

3: 1.44

4: 1.00

5: 0.79

R: 3.76

Aisin AX-15 (.5-): The 5-speed manual transmission option found behind 4.0L engines in trucks built after March . The AX-15 is a medium-duty manual transmission that is considered adequate for the 4.0L engine's power output. As with the AX-4 and AX-5, the manufacturer specifies 10W-30 motor oil, but Pennzoil Synchromesh and Redline MT-90 fluids are frequently recommended. DO NOT lubricate Aisin manual transmissions with GL-5 gear oil, as the transmissions feature brass synchronizers that will be destroyed by standard gear oils.

Fluid capacity: 3.3 qt.
 
Gear ratios:

1: 3.83
2: 2.33
3: 1.44
4: 1.00
5: 0.79
R: 4.22


Transfer Cases

New Process 207 ():

New Process 228 ():

New Process 231 (-): The standard transfer case for all non- trucks, the NP231 is a simple, manually shifted, chain driven transfer case. The 231 is considered more than strong enough for any stock drivetrain. The NP231 is designed to use Dexron-Mercon transmission fluid.

Shift Pattern: 2WD - 4WD (Part Time) - N - 4WD Low

New Process 242 (-): The "full-time" transfer case for -, the NP242 is similar to the NP231 except for the addition of a full-time 4WD option, allowing for the use of 4 wheel drive on surfaces with good traction. As with the NP231, the 242 is designed to use Dexron-Mercon transmission fluid.
 

Shift Pattern: 2WD - 4WD (Part Time) - 4WD (Full Time) - N - 4WD Low


Axles



Dana 30 (-): The only front axle to equip Comanches, the Dana 30 (or D30) is considered a highly reliable axle well-suited for light to moderate off-road use. 2 wheel drive models feature a solid beam in place of this axle.

Dana 35 (-): The standard rear axle to equip Comanches without the Metric Ton package. The Dana 35 (D35) has a poor reputation in the Jeep community due to its weakness under extreme use with oversized tires. The Dana 35 is typically reliable when equipped with tires less than 33 inches tall. Dana 35 units after use C-clips to retain axle shafts.

AMC 20 (): The "heavy duty" rear axle for Comanches, the AMC 20 is a rare axle identified by its perfectly round differential cover. While not as highly prized as Dana 44 rear axles, the AMC 20 is far stronger than the Dana 35.

Dana 44 (-): The rear axle of Comanches with the "Heavy Duty Axle" option or the Metric Ton package, the Dana 44 is highly regarded for its strength in extreme use situations with tires up to 37 inches tall. Comanches with the Dana 44 axle are highly sought after.

Final Drive (axle) ratios:

2.5L or 2.8L, 5-speed manual: 4.10:1
2.5L, 4-speed manual: 3.55:1
2.5L or 2.8L, 3 or 4-speed automatic: 4.56:1
4.0L, 5-speed manual: 3.07:1
4.0L, 4-speed automatic: 3.55:1

Part 3: Maintenance Information

Part 4: Common Issues and Solutions

I: Rust

Since the newest Comanche is now 22 years old, rust is simply a fact of life for all but the most well-cared-for examples. Comanches operated in areas of high road salt use are particularly prone to rusting, with vehicles in deserts or temperate climates (such as the Southern United States) least prone to rust.

Floor Pans: Virtually all Comanches are expected to have at least some rust here, and this is generally the first place a Comanche rusts. If the vehicle has not been meticulously checked for leaks during its entire lifespan, water can (and will) leak onto the floor pans and collect under the carpet without any place to go. Depending on how the vehicle has been stored, rust will range from minor surface damage to complete destruction of the vehicle's floor. A number of methods to repair floor pans exist, including ready-made patch panels, although these are often of extremely poor quality.

Rocker Panels: Generally the first place rust is visible to the naked eye, rocker panel rust occurs mostly as a result of road conditions or poor maintenance. A number of methods to repair rocker panels exist.

Rear Wheel Wells: After a Comanche rusts in its rocker panels, the rear wheel arches are generally the next areas to go. Salt, mud and other debris builds up behind the rear tire, and if allowed to sit uncleaned, will eventually destroy the area around the rear fender flares. Due to the Comanche's rarity, repairs to the bed will generally have to consist of either cut-out sheet metal sections from other Comanches or custom fabrication work.

Part 5: Conclusion

Part 6: Credits

Information

Minuit,

Critical Input

Pictures

Minuit: Comanche

redwolf624: Comanche, 2.8L engine bay

Up next: Finishing the overview and common issues. I still need pics.

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