Question about 1990 Jeep Wrangler

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Switch does not illuminate and four wheel drive won't engage in either hi or low.

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  • 13 Answers

Wiring or electric motor prob or it could be vacum line prob too.

Posted on Jan 03, 2014

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Posted on Jan 02, 2017

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SOURCE: jeep stuck in low four wheel drive

Put the transmission in neutral, emergency brake off, foot off the brake pedal, now try shifting out of 4 wheel drive low. If that doesn't work, drive forward, and again do the above, trans. in neutral, roll to a stop, foot off brake, try to disengage. What you're probably experiencing is called drive shaft 'wind up', and it is very difficult to disengage, but do the above and it should shift out of 4 low. countrycurt0

Posted on Sep 01, 2008

  • 19 Answers

SOURCE: 1998 Ford F-150 4-wheel drive won't engage

lock it in and jack up and see which part isnt locked
transfer, front end
front end uses vacuum actuater
and transfer uses a electric motor
front driveshaft shouldnt turn when in park and front wheels off the ground
front wheels shouldnt turn with one wheel up

Posted on Feb 06, 2009

  • 5 Answers

SOURCE: 1999 jeep grand cherokee all time four wheel drive will not engage

Sounds like the splines on your transfer case gear are ground down

Posted on Apr 23, 2009

  • 23 Answers

SOURCE: 2000 jeep grand cherokee four wheel hi not working

Does the rear axle still pull when in 4-hi? If so, then I'd say the shift fork on the transfer case is bent or worn.

Posted on Dec 09, 2009

  • 4 Answers

SOURCE: 1990 jeep yj 4 wheel drive issues

what are you trying to say is that the front wheels wont engage?? if this is your problem? check the actuater on the passenger side axle there are 3 lines that go to it and that is what pulls it in and pushes it out of gear by air.

Posted on Jun 17, 2010

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