1. Tip...
    If you hold most smartphones sideways
    you can bring up a more full featured version of the forum.
    Dismiss Notice
Dismiss Notice



Register Today It's free! This box will disappear once registered!

'91 4x4 module test?

Discussion in 'Transmissions & Transfer Cases' started by mpierich, January 2, 2005.

  • Searches ExplorerForum.com
    1. mpierich

      mpierich New Member

      Joined:
      January 2, 2005
      Messages:
      36
      Likes Received:
      0
      Trophy Points:
      0
      City, State:
      Central PA
      Year, Model & Trim Level:
      '92 XLT
      Hello,

      OK, I figured out how to search the site - sorry. I still have a question: Can anyone verify that the test on the module works? My understanding is that you disconnect the connectors, then push the test button. If it blinks, the problem is the shift motor, if it stays lit the problem is the module itself. That inplies that if it doesn't light at all, there's no problem. Anybody ever actually do this?

      thanks.
       
    2. Support EF

      Join the Elite Explorers for $20

      Explorer Forum has probably saved you that much already, and will continue to save you money as you learn how to diagnose fix problems yourself, and learn which modifications work without having to experiment on your own. Elite Explorer members see practically no ads, can add their own profile photo, upload photo attachments in all forums, and Media Gallery, create more private Conversations, and more. Join Today. Your support is greatly appreciated.


      to hide adverts.
    3. mrboyle

      mrboyle I Drive By Brail Moderator Emeritus

      Joined:
      February 18, 1999
      Messages:
      4,143
      Likes Received:
      0
      Trophy Points:
      48
      City, State:
      Montrose, CO
      Year, Model & Trim Level:
      '95 Bronco '80 Toy
      From my experience the "module test" works 0% of the time. If you are having trouble getting the 4wd to work you need to start by removing the shift motor and use direct 12 volts to shift the motor into low range. Then using an adjustible wrench put the t-case into low. Reinstall the shift motor, put an indexing mark on the contact cover, then remove it, clean the contacts and reinstall the cover (lining up the index mark).
      This will reset the 4wd module and if everythig is still in working order you 4wd should be fixed. If it still doesn't work the shift motor is most likely the cause of the problem. I have never seen a module or control button fail.
       
    4. agzaretzka

      agzaretzka Elite - G-d Bless!

      Joined:
      May 13, 2004
      Messages:
      234
      Likes Received:
      0
      Trophy Points:
      0
      City, State:
      Kennewick, WA
      Year, Model & Trim Level:
      1991 EB
      If it blinks, the module passed its self-test; steady lit or not is a failure. It does not test any other compenents of the 4x4 system. People like to say that if it passes then " the problem is the shift motor" simply because it is the most common point of failure if the electronics are working, but that is not necessarily so.
       
    5. Tedman

      Tedman New Member

      Joined:
      December 29, 2004
      Messages:
      26
      Likes Received:
      0
      Trophy Points:
      0
      City, State:
      Santa Maria, Ca. (san luis obispo county)
      Year, Model & Trim Level:
      91 xlt
      what ever you do, do NOT!....

      What ever you do do NOT TAP the shift motor.
      I did that and smashed the magnets inside of it and have to replace the whole shift motor.

      There is a thread here in this forum that shows you how to rebuild the shift motor.
      read it and do it. its simple i should have read it before i started to hammer it.
       
    6. mpierich

      mpierich New Member

      Joined:
      January 2, 2005
      Messages:
      36
      Likes Received:
      0
      Trophy Points:
      0
      City, State:
      Central PA
      Year, Model & Trim Level:
      '92 XLT
      Thanks, we still have warm weather here so I'll try it this week.
       
    7. mpierich

      mpierich New Member

      Joined:
      January 2, 2005
      Messages:
      36
      Likes Received:
      0
      Trophy Points:
      0
      City, State:
      Central PA
      Year, Model & Trim Level:
      '92 XLT
      Mine stays lit but I will take off the motor and check it - maybe it has fooled the module somehow. Thanks.
       
    8. mpierich

      mpierich New Member

      Joined:
      January 2, 2005
      Messages:
      36
      Likes Received:
      0
      Trophy Points:
      0
      City, State:
      Central PA
      Year, Model & Trim Level:
      '92 XLT

      Well, I may still try tapping it but not hard enough to damage it...in these caes setting up a vibration in the case is usually the goal so a lot of small taps is usually better than a few large whacks.

      I did find the motor rebuild thread, it's great.

      Thanks a lot.
       
    9. Dopler174

      Dopler174 Official Welcome Committe Moderator Emeritus

      Joined:
      February 21, 2005
      Messages:
      4,999
      Likes Received:
      0
      Trophy Points:
      0
      City, State:
      Greensboro, NC
      Year, Model & Trim Level:
      1993 XLT 4X4
      :thumbdwn: I hate push button four wheel drive. I like the old days when you just pulled a lever. Kinda like big blocks...don't know what you got till it's gone. I think I'm gonna throw my shift motor off a cliff. :confused:
       

    Share This Page







    We Support Our Troops!