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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.

32515 topics in this forum

  1. Looking to understand some repair and modifications for transmission and differentials

    By Thandraux,
    • 15 replies
    • 1.2k views

  2. 1989 4.0 5 Speed MJ Running Slightly Cool?

    By oleskool,
    • 7 replies
    • 1.2k views

  3. 89 Jeep Comanche 4.0 won’t start

    By Lukas Eder,
    • 4 replies
    • 4.9k views

  4. Rugged Ridge Front Tow Hooks

    By War_Pony89,
    • 6 replies
    • 1k views

  5. Replacement 02 Sensor

    By Top C,
    • 14 replies
    • 1.9k views

  6. Front Signals Don't Work with Parking/Headlights On

    By jamcomanche,
    • 13 replies
    • 1.8k views

  7. 1989 MJ Stalling Issue

    By oleskool,
    • 4 replies
    • 835 views

  8. Towing uhaul car trailer with comanche?

    By 10thta,
    • 4 replies
    • 1.2k views

  9. Stutter/Sputter/Uphill-lane change Power Loss

    By Thandraux,
    • 12 replies
    • 1.8k views

  10. 1989 Comanche fuel pump relay buzzing... 1 2

    By Andy in Pa,
    • 28 replies
    • 3.3k views

  11. Sputtering bucking back firing under load

    By 92manche,
    • 7 replies
    • 759 views

  12. 2.5" brake shoes on dana 35??

    By 10thta,
    • 6 replies
    • 1.6k views

  13. Windshield Replacement options

    By skidoo_j,
    • 15 replies
    • 4.4k views

  14. Replacing Shocks. Seeking Advice/tips. 1 2

    By MinnesotaManche,   
    • 25 replies
    • 6.7k views

  15. Fuel pump bracket

    By ftpiercecracker1,
    • 4 replies
    • 891 views

  16. Can I use a later XJ Heater Core

    By howeitsdone,
    • 7 replies
    • 2.1k views

  17. Sway Bar Link Dimensions

    By AZJeff,
    • 1 reply
    • 482 views

  18. Shift into 4 wheel drive

    By Virginia,
    • 16 replies
    • 2.2k views

  19. 2.5" brake shoes on dana 35??

    By 10thta,
    • 3 replies
    • 697 views

  20. Parasitic Battery Draw

    By rccubed,
    • 10 replies
    • 1.5k views

  21. loss of brake fluid

    By Muncher,
    • 5 replies
    • 1k views

  22. welp I do NOT pass emissions

    By Jesse J,
    • 22 replies
    • 1.5k views

  23. Inner CAD bearing removal?

    By jeepmjga,
    • 6 replies
    • 656 views

  24. Removable Drain plugs?

    By KoopaKid,
    • 3 replies
    • 803 views

  25. HELP! getting a handle on things

    By p0lel0ck,
    • 1 reply
    • 2.7k views
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