Question about 1989 Jeep Cherokee

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I need a vaccum circuit diagram of a 4wd front axle actuator for a 1989 Jeep Cherokee , 2.5 L

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  • Jeep Master
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That HOOD sticker is mostly only for smog related vacuum.
here is one page.
the command trac, is here
the axle vacuum slave
the dash vacuum valve are all there.
10 hoses there are. the vacuum tank 1, goes to hard vacuum in the intake manifold plenum. even the colors are here.
http://jeepdied.com/4WD.html

Posted on Dec 21, 2016

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  • Expert
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It should be on a sticker, in the engine compartment, or the hood,

Posted on Dec 18, 2016

  • Anonymous Dec 29, 2016

    he wants 4wd drawings not smog.

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1 Answer

I have a 97 blazer 4wd i repalced vaccum switch all vaccum lines and made sure actuator cable was good lights come on like im in 4wd but diff doesnt lock in and actuator not getting vaccum


The vacuum actuator should move by hand without vacuum applied. You should also be able to see it move if you have someone switch the transfer case into 4hi/lo from 2wd and then back again. There is a vacuum switch on top of the transfer case that locks vacuum once the encoder motor engages the transfer case to lock the front axle into position, and then releases the vacuum once the encoder switches back into 2wd mode allowing the front axle to decouple. If you aren't getting vacuum, first check your vacuum lines for leaks, then check for vacuum coming from the transfer case when it's in 2wd mode.

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I have a 1994 4wd grand cherokee jeep what makes it bump at sharp turn's


Sounds like the front axle in engaged,if it is command trac there may be a problem with the vacuum "motor" on the front axle.

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1 Answer

How do i lock in my 4wd on my 1989 jeep cherokee?


They shouldn't have any amnual hubs in the fornt axle. You simply have to shift into "4HI" position and its locked in. Some have a part time 4WD position but its not locked in 4WD all the time. Older models you had to turn a lever on both front wheels to lock. Some models its a switch on the dash to engage not a lever in the floor.

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When in 4wd front tires dont spin when stuck. 99 silverado 1500


check for b+ at the front axle actuator,if you have b+ at the actuator it is the actuator,if not check for b+ at your transfer case switch,if it is electric,if it is vaccum check for vaccum at the switch.if you have b+ or vaccum it is the switch.hope this helps.

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How to test 4wd actuater for 90 chevy pick up


The 4x4 system on an 88-98 full size gmtruck is controlled electronically except the shifting of thetransfer case which is done with a lever. When the transfer case isshifted into a 4x4 gear a switch in the upper driver side of thetransfer case is closed this sends power to the front axle actuatorwhich engages the front wheels to the front axle. A sensor is alsolocated on the front axle which is closed when the actuator shiftsthe axle into gear.

The first thing to check is the 4x4fuse if it is bad replace it.
Next check the switch on the transfercase connect a continuity tester to the switch and shift the transfercase into 4x4 the stitch should close, if it dose not replace it ifthe switch is functioning properly replace actuator on front axle

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1 Answer

90 jeep cherokee 4 wd acuator is moving back and


first is it a vacuum actuator on the front axle and u may be losing the vacuum when u hit the gas pedal. so spend 15 dollars and get a vacuum test kit to check for any leak downs in any of the vacuum lines,it maybe time consuming but will be worth doing yourself before paying 6 hrs of labor to a shop to do it all

Jan 16, 2010 | 1999 Jeep Cherokee 4WD

2 Answers

Four wheel drive wont engage


Hi ninja,

Select-Trac?

Make sure you have plenty of 90 wt. in the front axle. I've got an '86 Cherokee Laredo. It doesn't kick right in to gear. You need to be moving, but not to fast. Sometimes reversing, then back into drive works.

When you disengage it, if you are moving at or above 30 mph, you'll hjear a rapid clicking from the front axle as it tries to let go. Put it in neutral for a second or two. That will take enough strain off the drive train to allow it to disengage.

Best regards
Mike

Dec 19, 2009 | 1986 Jeep Cherokee

1 Answer

Hose hanging fom front axle where does it go


could be one of two hoses it is either a vent for the front axle which it gets tied up to frame,or it is the vaccum line to the front axle for 4wd to engage front wheels and it runs up to the back side of cruise control and vaccum canister

Sep 27, 2009 | 1998 Jeep Grand Cherokee

2 Answers

1989 Jeep Cherokee Pioneer 4wd problems


Most Jeeps are mechanically shifted, not vaccum.

If it is mechanically shifted, simply check your linkage underneath.

That's after you check you front driveshaft and make sure it's working, and there. I've known people to steal em.

If it is vacuum operated, then I'm at a loss.

Feb 01, 2009 | 1989 Jeep Cherokee

2 Answers

Where can i find a vaccum diagram for an 89 jeep cherokee 4.0


i scanned a pic out of my manual for ya , 89 cherokee 4.0 , hope its readable.


8c4f2b6.jpg

Jan 07, 2009 | 1989 Jeep Cherokee

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