Question about 1987 Jeep Wrangler

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1987 Jeep YJ [Wrangler] so owner ship says''

When 4 wheel drive in gear, front wheels still not in drive plus 4wheel drive light on dash does't come on. It is a 5 speed standard trans.Would the problem b in the transfer box.

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  • Anonymous Mar 01, 2009

    I parked it for this winter.I'm either going to sell it this year or fix it up for weekend drivin. Haven't checked anything yet, too cold an no time. No mod. to front axile,no locking hubs an no controller on it. I not use it for awile ,an when i did 4 wheel did not work'''

  • Richard Scordino May 11, 2010

    Have you checked to see if transfer case linkage is actually engaging the unit? Has anyone modified front axle and put manual locking hubs on there? Does the axle have a controller on it?

  • Anonymous Mar 25, 2014

    Stuck in 4wheel drive and will not come out why

  • Anonymous Mar 25, 2014

    Will not come out of 4 wheel drive

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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.

Posted on Mar 08, 2009

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1 Answer

Will not shift into 4wheel drive


On these issue,there are few solved help links for troubleshooting the issue easily.-------

Click the link below:---
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http://repairhelpcenter.blogspot.com/2011/12/no-4x4-light-on-dash.html

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http://schematicsdiagram.blogspot.com/2012/01/4x4-truck-makes-roaring-noise-in-front.html

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Car will not go into 4WD high or 4WD low?


http://schematicsdiagram.blogspot.com/2011/12/car-will-not-go-into-4wd-high-or-4wd.html

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No 4x4 light on dash?

http://repairhelpcenter.blogspot.com/2011/12/no-4x4-light-on-dash.html

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4 wheel drive system will not disengage?

http://technoanswers.blogspot.com/2012/01/4-wheel-drive-system-will-not-disengage.html

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http://schematicsdiagram.blogspot.in/2012/02/4wd-light-is-flashing-and-beeping-no.html

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2002 Jeep Wrangler: 4WD Idiot Light is ON?

http://technoanswers.blogspot.in/2012/06/2002-jeep-wrangler-4wd-idiot-light-is.html

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Traction control switch will not engage on 4WD High or Low

http://whoisbyme.blogspot.com/2012/10/traction-control-switch-will-not-engage.html

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4WD light flashing and 4WD will engage after few minutes

http://repairhelpcenter.blogspot.com/2012/10/4wd-light-flashing-and-4wd-will-engage.html

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2008 Toyota Tundra: 4x4 Wheel Drive Light is Flashing?

http://technoanswers.blogspot.in/2012/05/2008-toyota-tundra-4x4-wheel-drive.html

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4x4 front differential will not engage the axle on ford?

http://technoanswers.blogspot.in/2012/02/4x4-front-differential-will-not-engage.html

-------
4x4 will not engage on Ford F150? http://technoanswers.blogspot.in/2012/02/4x4-will-not-engage-on-ford-f150.html

-------------
Dodge Ram 4x4 light keeps flashing 4X4 LOW LIGHT IS FLASHING ON DASH

http://technoanswers.blogspot.in/2012/09/dodge-ram-4x4-light-keeps-flashing.html

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Ford 4x4 front wheels will not engage?

http://technoanswers.blogspot.in/2012/02/ford-4x4-front-wheels-will-not-engage.html

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These details will help.

Thanks.

Nov 25, 2012 | 1996 Jeep Grand Cherokee

1 Answer

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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1987 jeep yj 6 cyl manual trans. New fly wheel, clutch, presure plate, and batt. Starter is one month old on old worn flywheel with bad ring gear. Inspected starter gear before reinstalled on the new fly...


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1 Answer

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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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1 Answer

I have a 1987 jeep wrangler and it will not shift into 4 wheel dr


The front axle connects 4wd by vacuum. check the vacuum hoses that run to the actuator. Pay close attention to the vacuum hoses running underneath the battery as battery acid can eat thru those hose easily. Good Luck.

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1 Answer

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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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2 Answers

4 wheel drive doesnt work.


Has this Jeep been modified at all?
It sounds like the shifter cable was reinstalled backwards.
Specifically the 4-Low "Not Climbing Well". 4-Low should give you the best torque and hill climbing ability.
Do you feel any "Binding" in the steering wheel (difficult to turn)?
Remember a Jeep uses real driveshafts and differentials to give you 4WD - you cannot engage 4WD or 4-Low on dry hard surfaces. It needs a little bit of slip between the wheels for turns.
Check you're fluids too.

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3 Answers

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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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1 Answer

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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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1 Answer

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if u got automatic front hubs stop put in park pull 4x4 shifter into 4 wheel
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rank, rate & vote for my solution

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