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Some General MJ Info and FAQs


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General Information


Trim Levels
Bed Information
 
Maintenance
Engine Identification, Specifications, Capacities and Maintenance
Read Engine Codes (Flashing check Engine Light)
Torque Specs
 
Drivetrain
What Rear Axle do I have?
What Gear Ratio do I have?
How big a tire can I run on my axles?
Which Manual Transmission Do I have?
What does the Power/Comfort Switch on the dash do?
 
Swapology
What wheels will fit my Stock MJ
What parts are MJ specific?
What parts from a Cherokee can I use on my MJ?

http://comancheclub.com/forums/viewtopic.php?f=2&t=17351
http://comancheclub.com/forums/viewtopic.php?f=2&t=35480

What parts from other vehicles can I use on my MJ?


http://comancheclub.com/forums/viewtopic.php?f=2&t=29868
 
What parts from other vehicles look like they would work but ARE NOT a direct swap

Dakota tail lights ARE NOT a direct swap for MJ tail lights
XJ fuel senders are a mirror image of MJ fuel senders

 

How Do I...


  •  
    Drivetrain
Go from 2 Wheel drive to 4 Wheel Drive
Swap out the BA 10/5 for a AX15 or AW4
Add Power steering (2.5L '87)
 
Electrical
Full Gauge Cluster Swap: [86-90] [91-92]
Add Power Windows and Door Locks
Add (factory) Fog Lights
Replace Cargo Area Lights
 
Interior
Add a Full Center Console
Remove the Dash/Off-site Writeup
Remove the Interior Trim
Remove the Bed
 
Deal with Floorboard Rust
Finding Leaks
Replacing with patch panels
Minor Surface Rust
 
Service the Brakes
General Brake Procedures (off-site link to lunghd.com)
Brakes for Dummies (offsite link to familycar.com)
Bleeding the Brake System (starts with post 15)
Brake Line Adjustments
Rear proportioning Valve

 

 

97+ XJ conversion Specific Information


Front End Conversion on an '86 MJ
Front End Conversion ('87+ MJ) (under construction)
Dash
Seats
Doors
Windshield Washer Fluid tank installation
97+ Door handles and Mirrors on pre-97 doors

 

 

Engine/Starting/Stalling Issues


General Crank Position Sensor (CPS) problems

 

 

Common Upgrades


Dual Diaphragm Booster Upgrade
V8 ZJ Swaybar Swap
ZJ Steering Box
Making XJ Seat Brackets Work in an MJ
97+ XJ Door Seals
Under Hood Light
Electric Fan Conversion
Disk Brake Conversion

 

Under Construction....Please PM me or post other common questions (and ideally a link to a thread that answers them)

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I have some info for the late model nose swap: The harness for the at least 88 model only needed the 3 wires for the front marker/turn signals spliced in. You do have to dig into the late style harness a little ways until you find the wiring "junction" from the factory, and then cut it BELOW the soldered splice. Now jsut splice it into your original harness, after you verify the correct wiring connection BEFORE you crimp/solder. Oh, and don't forget to cap off the extra "hot" wire on each side that you will end up with. Look at the "pass.side" pic, and you can see what I mean.

 

 

 

Other than this, it was pretty much a "bolt on" over a couple of hours. :thumbsup:

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