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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.

32821 topics in this forum

  1. 1989 4.0 5 Speed MJ Running Slightly Cool?

    By oleskool,
    • 7 replies
    • 1.5k views

  2. 89 Jeep Comanche 4.0 won’t start

    By Lukas Eder,
    • 4 replies
    • 5.2k views

  3. Rugged Ridge Front Tow Hooks

    By War_Pony89,
    • 6 replies
    • 1.4k views

  4. Replacement 02 Sensor

    By Top C,
    • 14 replies
    • 2.4k views

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

    By jamcomanche,
    • 13 replies
    • 2.2k views

  6. 1989 MJ Stalling Issue

    By oleskool,
    • 4 replies
    • 1k views

  7. Towing uhaul car trailer with comanche?

    By 10thta,
    • 4 replies
    • 1.5k views

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

    By Thandraux,
    • 12 replies
    • 2.3k views

  9. 1989 Comanche fuel pump relay buzzing... 1 2

    By Andy in Pa,
    • 28 replies
    • 4.7k views

  10. Sputtering bucking back firing under load

    By 92manche,
    • 7 replies
    • 1.1k views

  11. 2.5" brake shoes on dana 35??

    By 10thta,
    • 6 replies
    • 2k views

  12. Windshield Replacement options

    By skidoo_j,
    • 15 replies
    • 5.4k views

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

    By MinnesotaManche,   
    • 25 replies
    • 7.7k views

  14. Fuel pump bracket

    By ftpiercecracker1,
    • 4 replies
    • 1.2k views

  15. Can I use a later XJ Heater Core

    By howeitsdone,
    • 7 replies
    • 2.4k views

  16. Sway Bar Link Dimensions

    By AZJeff,
    • 1 reply
    • 673 views

  17. Shift into 4 wheel drive

    By Virginia,
    • 16 replies
    • 2.6k views

  18. 2.5" brake shoes on dana 35??

    By 10thta,
    • 3 replies
    • 893 views

  19. Parasitic Battery Draw

    By rccubed,
    • 10 replies
    • 1.9k views

  20. loss of brake fluid

    By Muncher,
    • 5 replies
    • 1.3k views

  21. welp I do NOT pass emissions

    By Jesse J,
    • 22 replies
    • 2.1k views

  22. Inner CAD bearing removal?

    By jeepmjga,
    • 6 replies
    • 950 views

  23. Removable Drain plugs?

    By KoopaKid,
    • 3 replies
    • 1.1k views

  24. HELP! getting a handle on things

    By p0lel0ck,
    • 1 reply
    • 2.9k views

  25. Transfer Case Basics - Won't Shift

    By Romain,
    • 8 replies
    • 3.7k views
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