MJ Tech: Modification and Repairs

32554 topics in this forum

1. 86 tach wiring

   By Agreen, May 11, 2022
   • 20 replies
   • 2.6k views
   • 
   • devotee
   • October 27, 2025

2. Oil issues, wow not leaking though

   By Ole Tsula, October 27, 2025
   • 2 replies
   • 196 views
   • 
   • fiatslug87
   • October 27, 2025

3. Keep 89 Renix, or swap to 94 HO engine?

   By jakesmog, October 26, 2025
   • 3 replies
   • 252 views
   • 
   • ghetdjc320
   • October 26, 2025

4. Door handle gaskets / seals

   By farmboi, May 7, 2025
   • 22 replies
   • 1.9k views
   • 
   • ghetdjc320
   • October 26, 2025

5. Valve cover gasket

   By terryt, October 23, 2025
   • 4 replies
   • 319 views
   • 
   • terryt
   • October 25, 2025

6. Off road noise!

   By TheMaddTitan13, September 9, 2025
   • 15 replies
   • 4.3k views
   • 
   • TheMaddTitan13
   • October 24, 2025

7. Dash Bezels.

   By Eagle_SX4, October 23, 2025
   • 1 reply
   • 230 views
   • 
   • eaglescout526
   • October 24, 2025

8. Steering wheel doesn’t return to center

   By hgeranium, October 22, 2025
   • 9 replies
   • 484 views
   • 
   • AZJeff
   • October 23, 2025

9. 2.5-4.0 swap

   By Halton Smith, September 30, 2025
   • 4 replies
   • 701 views
   • 
   • Halton Smith
   • October 23, 2025

10. Removing old heater/ac vac lines

    By hgeranium, October 22, 2025
    • 5 replies
    • 251 views
    • 
    • eaglescout526
    • October 22, 2025

11. Fastener Cross Reference

    By JimiGibbs, October 22, 2025
    • 3 replies
    • 235 views
    • 
    • fiatslug87
    • October 22, 2025

12. OEM Rear Brakes 1989 Comanche

    By Dal3, October 15, 2025
    • 2 replies
    • 310 views
    • 
    • Dal3
    • October 21, 2025

13. 91 metric ton shocks?

    By vhfr1289, October 20, 2025
    • 2 replies
    • 270 views
    • 
    • 89 MJ
    • October 20, 2025

14. Glasstite Cap

    By GrizzzzBear, February 20, 2020
    • 11 replies
    • 3k views
    • 
    • StrubleChad
    • October 20, 2025

15. How to wire up a different alternator

    By Warren99, October 19, 2025
    • 1 reply
    • 329 views
    • 
    • Warren99
    • October 19, 2025

16. Renix stumbling around 2300RPM - SOLVED IT!

    By Smash6, October 18, 2025
    • 12 replies
    • 678 views
    • 
    • Tsalagi
    • October 19, 2025

17. 1989 Jeep Comanche not shifting when cold or electrical issue

    By Jack p, October 17, 2025
    • 2 replies
    • 258 views
    • 
    • Jack p
    • October 18, 2025

18. Will a 5V Sine wave work on an MJ Tach?

    By Warren99, October 11, 2025
    • 4 replies
    • 354 views
    • 
    • Ωhm
    • October 17, 2025

19. 86 speedometer cable question

    By ratrapp, October 15, 2025
    • 6 replies
    • 355 views
    • 
    • ratrapp
    • October 17, 2025

20. Identifying a rear axle for parts

    By PomPom, October 17, 2025
    • 1 reply
    • 319 views
    • 
    • Pete M
    • October 17, 2025

21. Pics of the Auto Transmission mounting location

    By Eagle_SX4, October 16, 2025
    • 4 replies
    • 204 views
    • 
    • llhat
    • October 17, 2025

22. Wire Over Driver's Shoulder Above Seatbelt?

    By NickyV, November 3, 2024   

    • wiring
    • 7 replies
    • 936 views
    • 
    • NickyV
    • October 16, 2025

23. Diagnosing Clutch Issues: Help/Advice Wanted

    By NickyV, January 27, 2025   

    • clutch
    • 9 replies
    • 1.1k views
    • 
    • NickyV
    • October 16, 2025

24. Intermittent low idle in drive+dies on initial acceleration

    By hgeranium, October 11, 2025
    • 3 replies
    • 345 views
    • 
    • pizzaman09
    • October 14, 2025

25. Another Rear Bumper Question

    By JimiGibbs, October 13, 2025
    • 3 replies
    • 251 views
    • 
    • JimiGibbs
    • October 13, 2025