death wable

[ryguy]

i just lifted my 89 mj i drrove it back and forth from work for about three mounths now it gos into a death wable when i hit a bump what could be causing this

 

also when i turn the key off it keeps runing for abuot five seconds what could it be

[bigd44889]

wobble could be many things

check all bushings

control arms

see if you axle is offset (track bar adjustment)

tie rod end are tight

ball joint

wheel bearings

alinghnment

mine was a bent rim on the rear right

good luck with it :cheers:

[BLHTAZ]

Welcome to the Club :cheers:

 

 

What kind of lift did you install?

How much lift did you install?

Did you use a reaplcement track bar?

Did you replace the control arms?

Did you install new wheels & tires?

When you say "death wobble", do you mean that when you hit a bump it goes so crazy that you have to stop the truck to keep control or is it just a bad vibration and you can keep driving?

 

Answers to these will be a big help in trying to help you find the problem. Death wobble is a real PITA to figure out even with plenty of info.

 

The running issue is possibly the ignition switch going bad.

[CWLONGSHOT]

LOOK here.... :shake: :shake: search.php?keywords=DEATH+WOBBLE&terms=all&author=&sc=1&sf=all&sk=t&sd=d&sr=posts&st=0&ch=300&t=0&submit=Search

 

Welcome to the site!! Everyone with a Jeep has either herd of this or experienced it. We have many many threads written on it. I did a search and the link I have posted pulls up lots of information. Sit back and read read read. :D

 

CW

[dasbulliwagen]

Being a dealership jeep tech, Chryslers answer to this especially on newer models where bushing wear is not an issue, is to replace the steering stabilizer. They finnally went to using a black painted heavy duty off road style stabilizer after having customers come back time and again to have the tiny little factory unit replaced to no avail. Also a good road force wheel balance will help you tremendously, it cost more to have done, but is worth the price. Good luck

[BLHTAZ]

I worked in a Jeep dealership as well in the parts department (until I got laid off in November). I tried to explain to them that death wobble is NOT caused, nor cured, by a steering stabilizer. A heavy duty one may hide the effects, but it is not the problem. A vehicle that is operating properly can be driven without a stabilizer on it with no ill effects other than the steering "feeling" a little loose possibly.

 

The wheel & tire balance is probalby the most common cause of death wobble. The vibrations from the improper balance causes damage to the track bar, ball joints, control arms etc, etc... so it may take a good balance and repalcement of parts that have been damaged from it to cure it.

[Eagle]

Going back to the original post -- most of the things people blame for death wobble do not (and cannot) "cause" death wobble ... but they CAN make it easier for death wobble to happen. The cause remains something that makes a front wheel start wobbling, and that's usually either tire balance or a bent rim. In my first episode, it was a warped front rotor.

 

One of the things that makes it easier for death wobble to happen is insufficient caster angle. And it just so happens that when you do a lift, the front axle swings down and back around the frame end control arm mounts ... thus reducing the caster angle. Experiencing death wobble after a lift is quite common, because the first stop after a lift should be the alignment shop and most people skip that step.

[mvusse]

:agree:

 

With the badly designed inverted Y steering setup we have, lifting the vehicle introduces toe-in. In my case 4.5" lift resulted in 2 (TWO!) inches of toe in and death wobble severe enough to fry my alternator bearings. It also dropped my visors, popped the front off my radio and shook my teeth out of my skull. That was at only 35mph!

 

Set toe in back to 0, where it is supposed to be and she's as steady as a rock at any speed up to 85mph. Don't know beyond that as I have not gone faster than 85 yet.