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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.

32571 topics in this forum

  1. GM 3.8 Supercharger on a 4.0

    By 89 MJ,
    • 23 replies
    • 8k views

  2. Speedo won't work after trans swap - please advise

    By ShitboxTechnical,
    • 6 replies
    • 1k views

  3. OEM towhooks

    By 89 MJ,
    • 5 replies
    • 970 views

  4. Any original buyers seen this at the dealership?

    By Strokermjcomanche,
    • 4 replies
    • 999 views

  5. Not starting issues

    By CGCWO,
    • 2 replies
    • 834 views

  6. fuel pump

    By reevesmanche87,
    • 3 replies
    • 904 views

  7. 1990 Jeep Comanche 2.1 renault manual transmission

    By renzo1234567,
    • 15 replies
    • 2.7k views

  8. 2wd axle parts vs 4wd

    By rylee144,
    • 14 replies
    • 1.5k views

  9. 89 Comanche 2wd

    By Yoopermanche20,
    • 7 replies
    • 1.6k views

  10. (Manual) Pedal Assembly Question - Broken Weld

    By 86Redline,
    • 15 replies
    • 1.4k views

  11. "New" 89 MJ, just needs a little (LOT) TLC

    By Submariner,
    • 6 replies
    • 1k views

  12. which steering wheel puller do you own?

    By Pete M,
    • 15 replies
    • 1.3k views

  13. Center cap

    By Jay21,
    • 1 reply
    • 14.9k views

  14. Leaking Injector - Injector or O-ring?

    By 87MJJeep,
    • 13 replies
    • 2.9k views

  15. Jack weight

    By Jay21,
    • 8 replies
    • 1.3k views

  16. Steering wheel swap

    By Whitaker717,
    • 4 replies
    • 695 views

  17. Will not start, Fuel pump problem

    By Tyson Josh,
    • 9 replies
    • 1.1k views

  18. MJ Bumper options 1 2

    By Tex06,
    • 47 replies
    • 9.2k views

  19. What are these? on a 89 comanche under dash electronics?

    By Submariner,
    • 5 replies
    • 1k views

  20. Gauge cluster swap

    By Overlandmark2020,
    • 8 replies
    • 1.2k views

  21. Renix 4.0 fuel rail regulator?

    By Joe Doviak,
    • 3 replies
    • 1k views

  22. My 89 quit and won't start now 1 2 3

    By vfb,
    • 57 replies
    • 7.4k views

  23. Xj ax15-231 driveshaft on mj

    By Sly_Jeeper,
    • 3 replies
    • 756 views

  24. I steam cleaned my Comanche Steering wheel. Here is the video

    By ogjeep,
    • 14 replies
    • 1.3k views

  25. Bottoms of Rusted Box.

    By royal11,
    • 7 replies
    • 956 views
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