1989 Jeep Cherokee
Problem for Jeep 1989 Cherokee

1989 Jeep Cherokee Pioneer 4wd problems




By bbird12 on Feb 01, 2009

" "
My 4wd doesn't work in any position. Could it be any part of the vaccum, if so can I have as many diagrams and directions possible?
Comments:

Feb 01, 2009

- Not til next weekend, but I'm only gettin a little bit of suction out of the vac. hose at the front bumper.

Feb 02, 2009

- Not yet because I have to go to school this week, but tommorow we hopefully will have a snow day

Clarification Request

Posted by thundergod on Feb 02, 2009

Where does the vac line @ the front bumper go? Begin looking right on the front axle. there are several different designs that use a vacuum motor on the right side axle tube. You should be looking at vacuum lines that serve the 4x4 components not just any lines! Of course if any vacuum lines have developed leaks or have become disconnected it will lower overall vac to the entire system, but make sure the 4x4 system itself is hooked up before jumping all over the place! Of course, you have looked at the mechanical linkage to make sure the shift lever is actually moving the control on the transfer case, right?

Posted by thundergod on Feb 01, 2009

Did you look under there and see if anything is disconnected? Diagram or not, thats where I'd start!!!

Solution #1

posted on Feb 10, 2009
Not Rated)

transit360

Rank: Guru 
Rating: 92%, 33 votes
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.

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