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Posted on Dec 21, 2008
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4 wheel drive problem on Jeep YJ

4 wheel drive on 95 Jeep yj wont engage. Goes into gear but doesn't engage.

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  • 9 more comments 
  • jeepjenn Dec 21, 2008

    I have vac...but won't engage.

  • jeepjenn Dec 21, 2008

    Thanks so much...will check it out! :)

  • jeepjenn Dec 21, 2008

    Where would I find it...is it a dealer part?

  • jeepjenn Dec 21, 2008

    I'll have a look. Thanks again!!

  • Anonymous Jan 18, 2009

    I just bought my 87 jeep and they told me there was a vacuum problem ans thats why 4 wheel drive wont work

  • bbhelsley Jan 22, 2009

    Where is the vacume syliod located on the front axle. Are they easy to replace?

  • jeepjenn Jan 26, 2009

    I had the same problem. The vac. actuator is a dealer part only...I was told and it was $400!! The guy told me to take it apart and check to see if it was clogged/dirty as that could have been the problem. We did as he said , it was dirty....cleaned it out and it works just fine! Hope that helps you out!

  • jrrowray Feb 21, 2009

    1989 jeep YJ hard to get in 4 wheel drive.then viberats in front right wheel.

  • dwdjeep Feb 26, 2009

    I have a 92 YJ Jeep Wrangler with the 4 litter engine. The front wheels do not ingage when I put the shift lever into either 4 high or 4 low and the light on the dash does not come on. What is the problem? Is there an electrical sensor or switch that needs to be replaced?

  • bbhelsley May 11, 2010

    92 wrangler wont engage the fornt wheels in 4 wheel drive. It has vacume, and the fork works, back and forth, still the front wheels dont turn

  • Anonymous Mar 16, 2014

    Jeep. 4 wheel drive actuator

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  • Posted on Jan 26, 2009
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You can also check the 4 wheel drive vacuum switch on top of the transfer case...got mine for 10 bucks from parts store...fixed the problem

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  • Posted on Dec 21, 2008
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Check the Vac, seloind on the front axel

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  • Anonymous Dec 21, 2008

    Check the Vac, seloind on the front axel

  • Anonymous Dec 21, 2008

    I run alot of jeeps, that vac accucator in the front axel is bad then,, they are cheap to replace.

  • Anonymous Dec 21, 2008

    No problem, glad I could help

  • Anonymous Dec 21, 2008

    Not a dealer item,, you can order threw any auto parts store.. If you have a NAPA by you they are the cheapest, usually around $40.00..

  • Anonymous Dec 21, 2008

    No Problem..

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  • Posted on Nov 29, 2009
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I have a 1995 YJ 2.5 litr engine. The 4 WD works sporadically. Once it engages it is strong, the problem is that it engages when it wants to.

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91 jeep wrangler YJ shifting problems
do you mean it wont go into gear ? if so what gears ? it could be the clutch going out , if the pedal is soft or easy to push down than it probably needs a clutch. next time it wont go into gear try pumping the clutch or putting it from 2nd to 1st or what ever gear it has problems with
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I have an 89 jeep wrangler yj, when i try to engage 4 wheel drive front shaft is turnin but front tires are not pulling. any ideas of might be the case? just bought it and prior owner i dont think used the...
If you have a square box mounted to the right front axle tube, make sure the vacuum lines are attached to it and that it's working. If it's OK, then you have likely either have a broken differential gear set, broken outer axle joint or axle itself. I'd bet on the vacuum hose though. They did away with that unit in later jeeps because it was always getting disconnected.
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If you have an actuator box on the passenger front axle that may be disconnected or broken. If not remove the cover from the front differential and check the gears...they may be broken.
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Jan 13, 2010 • 1992 Jeep Wrangler
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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.
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Oct 06, 2009 • 1990 Jeep Wrangler
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My 89 Jeep YJ manual will not go in to reverse while running
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Sep 01, 2009 • 1989 Jeep Wrangler
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Looking for Service Repair Manual Jeep Wrangler YJ
i have a 1988 jeep wrangler 6cyl with 5 speed transmission. I was shifting the jeep and it got stuck in third gear. We opened it up and saw that the linkage is aligned and everything is in place. I dont know what is wrong and what to do next. please help ....
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Jul 10, 2009 • 1992 Jeep Wrangler
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1987 Jeep YJ [Wrangler] so owner ship says''
Our Jeep Wrangler YJ's are equipped with a vacuum module on the front axle. It is used to engage the front axle when the transfercase is shifted into 4WD. Check the vacuum lines on the front axle to make sure they are connected. The passenger side axle shaft has a disconnect sleeve that is moved left and right by the vacuum.
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Mar 01, 2009 • 1987 Jeep Wrangler
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1992 YJ can only shift into 3rd & 4th gear. No Reverse
The same thing happend to one of my wranglers, a 95 yj 4cyl 2.5 liter. The "Aisin AX-5" is the transmission that jeep used on the yj and tj 4cyl and 83 cherokee and up 4cyl, and the "Aisin AX-15"was used on some of the 6cyl models. Both are a "light duty" transmission according to the transmission manufacturer. As everyone knows, A jeep is no light duty vehicle, the shifting slider, a fork like item slides the gears back and forth over the drive and output gears to change the gears. and with heavy use or lack of maintanice they can break, they also can break cause of the cheap casting they used in the tranny. Other problems happen in those trannys too. The only thing is to tear the tranny apart and find out what failed and replace. I did this on the kitchen table ofer a day off. being the up own an early 90s yj, If you are one who doesn't work on their own car, I would find a good garage that is good with jeeps, they are not to expencive to fix, and when they are taken care of, will be a joy to own.
I hope this helps, Jeep ownership is a great thing.
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Feb 11, 2009 • 1992 Jeep Wrangler
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4wd problem jeep wrangler yj 1995
i just bought a used 97 CHEROKEE but i had the same problem, when i got to looking at it i found out the front driveshaft was shot, look at that, if its not it i would say its probably the transfer case especially with an older vehicle like that which is a very expenxive repair
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Dec 21, 2008 • 1995 Jeep Wrangler
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92 yj front axle
it actually moves a shift fork onto a spline. try moving fork by hand.
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