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MJ Tech: Modification and Repairs

For all your Comanche (MJ) needs.  An excellent place to ask questions, and to discuss modifications and issues.

32890 topics in this forum

  1. How to wire up a different alternator

    By Warren99,
    • 1 reply
    • 1.1k views

  2. Renix stumbling around 2300RPM - SOLVED IT!

    By Smash6,
    • 12 replies
    • 1.8k views

  3. 1989 Jeep Comanche not shifting when cold or electrical issue

    By Jack p,
    • 2 replies
    • 718 views

  4. Will a 5V Sine wave work on an MJ Tach?

    By Warren99,
    • 4 replies
    • 915 views

  5. 86 speedometer cable question

    By ratrapp,
    • 6 replies
    • 913 views

  6. Identifying a rear axle for parts

    By PomPom,
    • 1 reply
    • 656 views

  7. Pics of the Auto Transmission mounting location

    By Eagle_SX4,
    • 4 replies
    • 636 views

  8. Wire Over Driver's Shoulder Above Seatbelt?

    By NickyV,   
    • 7 replies
    • 1.4k views

  9. Diagnosing Clutch Issues: Help/Advice Wanted

    By NickyV,   
    • 9 replies
    • 1.8k views

  10. Intermittent low idle in drive+dies on initial acceleration

    By hgeranium,
    • 3 replies
    • 820 views

  11. Another Rear Bumper Question

    By JimiGibbs,
    • 3 replies
    • 668 views

  12. 16 gallon vs 23 gallon 1 2

    By eaglescout526,
    • 47 replies
    • 7.1k views

  13. Throttle body modification...

    By Master Guns,
    • 2 replies
    • 563 views

  14. OEM Rear Bumper Question

    By JimiGibbs,
    • 1 reply
    • 481 views

  15. Different radiator needed for engine swap

    By Warren99,
    • 2 replies
    • 656 views

  16. Voltage gauge inaccurate for anyone else?

    By hgeranium,
    • 3 replies
    • 841 views

  17. What are these vacuum lines?

    By Warren99,
    • 3 replies
    • 718 views

  18. Coolant Reservoir Tank Cap Question 1990 4.0

    By AnotherOldJeepGuy,
    • 17 replies
    • 2.1k views

  19. 86 cluster indicator light panel wiring diagram?

    By coheed,
    • 2 replies
    • 612 views

  20. REM II Menu Tree - as of v9.421

    By Gojira94,
    • 1 reply
    • 613 views

  21. New parking brake fix? 1 2

    By cruiser54,
    • 33 replies
    • 9k views

  22. Sudden drop in MPG

    By hgeranium,
    • 6 replies
    • 768 views

  23. 87-92 Tail light harness connector source!

    By schardein,
    • 7 replies
    • 3k views

  24. Dana 35 Rebuild Questions

    By Yellowoctupus,
    • 13 replies
    • 4.2k views

  25. Custom door cards

    By Aidenmoreno3,
    • 10 replies
    • 1.7k views
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