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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.

32746 topics in this forum

  1. can i convert my rear mj axle to coils? without welding anything or paying a arm and a leg?

    By Davidsamplesmjjr,
    • 19 replies
    • 2.3k views

  2. front lower control arms

    By Davidsamplesmjjr,
    • 14 replies
    • 2k views

  3. Gear recommendations

    By scguy,
    • 11 replies
    • 2k views

  4. Looking for a new rear bumper, any suggestions

    By EverGear,
    • 3 replies
    • 1k views

  5. 42Re-Aw4 Swap

    By jimoshel,
    • 14 replies
    • 19.5k views

  6. Headlights work marker lights don’t

    By Aidanfenn,   
    • 3 replies
    • 1k views

  7. LS swap guys! Need some input!

    By krustyballer16,
    • 14 replies
    • 1.9k views

  8. RPMs drop to zero, while driving - Can't solve 1 2

    By Big Dan,
    • 43 replies
    • 5.6k views

  9. Does my truck have ac

    By 89restoration,
    • 5 replies
    • 1.2k views

  10. Tailgate won’t open

    By ratty,
    • 10 replies
    • 2.2k views

  11. Overheating Diagnosis [1989 Jeep Comanche 4.0L I6] 1 2 3

    By james-mc,
    • 51 replies
    • 7.3k views

  12. 302 or 347 in a COMANCHE???

    By kaidenlem,
    • 8 replies
    • 1.7k views

  13. Leaf spring overhaul: bushings, bolts, pads, coating, shackles 1 2 3

    By A-man930,   
    • 59 replies
    • 18.7k views

  14. Wrong Rotors? - SOLVED- Break Pads and Rotors for 1988 Jeep Comanche RWD

    By CoastChief,
    • 22 replies
    • 3.2k views

  15. Electrical madness!

    By Jade cats,
    • 6 replies
    • 1.4k views

  16. 2.5L airbox

    By Rubikahn,
    • 2 replies
    • 1.1k views

  17. Ax-15 swap

    By scottie005,
    • 3 replies
    • 1k views

  18. Interior Door Panels

    By Ollie,
    • 3 replies
    • 1.2k views

  19. Interior Switch &Cigarette lighter Install

    By Tonynguy,
    • 4 replies
    • 1k views

  20. Engine swap

    By Tara Sinift,
    • 3 replies
    • 1k views

  21. ZJ axles

    By zomeizter,
    • 8 replies
    • 1.6k views

  22. Fuel Injector Retaining Clips

    By WahooSteeler,
    • 7 replies
    • 4.1k views

  23. 2.5 running lean when cold, super rich when hot.

    By MontanaManche,
    • 15 replies
    • 2.4k views

  24. More nuts!!

    By Muncher,
    • 20 replies
    • 2.9k views

  25. MJ runs but only when the key is in the crack position

    By 88mjsally,
    • 2 replies
    • 1.1k views
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