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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.

32671 topics in this forum

  1. Up and Down idle, seems worse in colder temps, need advice.

    By knever3,
    • 8 replies
    • 1k views

  2. Harmonic Balancer Installation Tips [1989 Jeep Comanche 4.0 I6]

    By james-mc,
    • 12 replies
    • 1.6k views

  3. Hard Starting, started 1 2

    By War_Pony89,
    • 37 replies
    • 4.7k views

  4. Going to pull the heater box one more time.....

    By watchamakalit,
    • 15 replies
    • 1.9k views

  5. An 86 Comanche....

    By KANTANKRUS,
    • 6 replies
    • 1.1k views

  6. Evapo-Rust

    By Rubikahn,
    • 10 replies
    • 6.9k views

  7. Moon visor wiring

    By Rubikahn,
    • 6 replies
    • 1.4k views

  8. steering upgrade questions

    By zomeizter,
    • 6 replies
    • 1.1k views

  9. Budget lift

    By bezjeep,
    • 11 replies
    • 2.5k views

  10. what should I look for in a renix comanche?

    By morks,
    • 3 replies
    • 858 views

  11. Headlight/running light issues

    By Roberts88-87,
    • 3 replies
    • 838 views

  12. Comanche bucket seats upgrade.

    By Kikapoo,
    • 3 replies
    • 1.4k views

  13. 91 comanche 4.0 pioneer fuel sending unit

    By Delee,
    • 11 replies
    • 2k views

  14. Reupholstering door panels

    By eaglescout526,
    • 18 replies
    • 3.1k views

  15. 87 comanche 2.5l headers upgrade

    By Kikapoo,
    • 4 replies
    • 1.1k views

  16. Turn signals (or blinky bits) 1 2 3 4 7

    By Jesse J,
    • 155 replies
    • 14k views

  17. Radiator mod- Close to Open

    By USFSOFFICIAL,
    • 9 replies
    • 1.5k views

  18. No Parking Lamps

    By 90LBPioneer,
    • 8 replies
    • 1k views

  19. Anyone using a MSD ignition on RENIX 4.0?

    By Coyote,
    • 19 replies
    • 4.6k views

  20. Ford FOTE-D5A fuel injectors

    By JimB,
    • 5 replies
    • 1.8k views

  21. Keeping two 88s all original - EGR tubes for 2.5L

    By lamarhooten,
    • 7 replies
    • 1.2k views

  22. Suspension and Tire options 1 2

    By CptVanGuard,   
    • 26 replies
    • 4.3k views

  23. Need Help - Dashboard Replacement and Adding A/C

    By VintageJC,
    • 17 replies
    • 3.2k views

  24. Bed removal

    By Rubikahn,
    • 6 replies
    • 1.1k views

  25. jeep 89 87 front window

    By Davidsamplesmjjr,
    • 14 replies
    • 1.8k views
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