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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.

32645 topics in this forum

  1. Class III trailer hitch

    By Ollie,
    • 2 replies
    • 1.1k views

  2. 89's battery just has a constant pull on it and I can't find it

    By David P.,
    • 10 replies
    • 1.5k views

  3. GM 3.8 Supercharger on a 4.0

    By 89 MJ,
    • 23 replies
    • 8.4k views

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

    By ShitboxTechnical,
    • 6 replies
    • 1.1k views

  5. OEM towhooks

    By 89 MJ,
    • 5 replies
    • 1k views

  6. Any original buyers seen this at the dealership?

    By Strokermjcomanche,
    • 4 replies
    • 1.1k views

  7. Not starting issues

    By CGCWO,
    • 2 replies
    • 871 views

  8. fuel pump

    By reevesmanche87,
    • 3 replies
    • 953 views

  9. 1990 Jeep Comanche 2.1 renault manual transmission

    By renzo1234567,
    • 15 replies
    • 2.8k views

  10. 2wd axle parts vs 4wd

    By rylee144,
    • 14 replies
    • 1.6k views

  11. 89 Comanche 2wd

    By Yoopermanche20,
    • 7 replies
    • 1.6k views

  12. (Manual) Pedal Assembly Question - Broken Weld

    By 86Redline,
    • 15 replies
    • 1.5k views

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

    By Submariner,
    • 6 replies
    • 1k views

  14. which steering wheel puller do you own?

    By Pete M,
    • 15 replies
    • 1.4k views

  15. Center cap

    By Jay21,
    • 1 reply
    • 14.9k views

  16. Leaking Injector - Injector or O-ring?

    By 87MJJeep,
    • 13 replies
    • 3.1k views

  17. Jack weight

    By Jay21,
    • 8 replies
    • 1.4k views

  18. Steering wheel swap

    By Whitaker717,
    • 4 replies
    • 736 views

  19. Will not start, Fuel pump problem

    By Tyson Josh,
    • 9 replies
    • 1.2k views

  20. MJ Bumper options 1 2

    By Tex06,
    • 47 replies
    • 9.6k views

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

    By Submariner,
    • 5 replies
    • 1.1k views

  22. Gauge cluster swap

    By Overlandmark2020,
    • 8 replies
    • 1.3k views

  23. Renix 4.0 fuel rail regulator?

    By Joe Doviak,
    • 3 replies
    • 1.1k views

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

    By vfb,
    • 57 replies
    • 7.8k views

  25. Xj ax15-231 driveshaft on mj

    By Sly_Jeeper,
    • 3 replies
    • 795 views
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