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Old June 16th, 2013, 07:38 AM   #21
rick1974
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have you put a heavy duty steering stabalizer on it yet?
I did put a new stabilizer on it, not hd and it was strong enough to stop the death fit but I could still feel the vibrations at 50-55 mph wich is the speed the DW always happens
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Old June 16th, 2013, 08:19 AM   #22
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I know in theory you shouldnt need a steering stabalizer but for some reason the majority of these jeeps and some lifted full size dodge trucks with same design front suspension have to have a good steering stabalizer on them to keep death wobble at bay. You might try a different set of wheels and tires just to rule that out, but if everything else is checking out i would put a heavy duty stabalizer on it and run it.
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Old June 16th, 2013, 03:38 PM   #23
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My 98 tj has the same rc 2.5 lift plus a 3/4 terraflex budget boost. I have had deathwobble twice in 100,000 miles I have wheeled it. Once from having a tire that had about 20 ounces of water in it and once from a junk track bar.
I Have 170,000 miles on my ca bushings and no stabalizer, tires are old and my wheels are bent. Yet I have no dw.
I do have new unit bearings and heavy duty steering. I did the hd steering because I kept bending stock stuff, yet never got dw from my allighnment being off.

90% of the jeeps with deathwobble I fix are from a junk tracbar, usually " almost new" aftermarket junk. The tracbar mount holes on the axle like to get egged out when the bolt isnt tight enough or the factory put too small of bolt in it.

You have covered the bases pretty well. Im my esperience deathwobble is usually set off by something like a rr crossing or big bump. This makes me think it is a bent wheel, bad tire, bad front axle u joint more then suspension. But.....

Your post says that you moved the tracbar hole 3/4"? If you did that with a non adjustable tracbar your axle has to be offcenter a mile. I have never been able to move a tracbar hole close to that far with only 2-3" of lift on a tj. If you have a r/c or similer tracbar toss it and get a oem.

I would double check you front axle joints, front driveshaft joints. Make sure your wheel bearings (unit bearings) have no play in them. Try taking f driveshaft out.

Make sure the tracbar is a new oem type and the mounting holes are not oversized at all.
I like to beef up the trac bar mounting holes by putting a grade 8 washer on the tracbar bolt and then welding the washer to the mount making it thicker. Make sure you dont have a tracbar bushing in there when welding.

Try another set of tires and wheels.
Check for play in steering shaft
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Old June 16th, 2013, 03:44 PM   #24
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Another common mistake people make is tightening the contol arms and tracbar while the jeep is on jacks. This can cause the bushings to bind up when you put weight on the vehical.
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Old June 17th, 2013, 08:51 PM   #25
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Another common mistake people make is tightening the contol arms and tracbar while the jeep is on jacks. This can cause the bushings to bind up when you put weight on the vehical.
thanks for the advice bdd I will try the different tires and wheels and removing the fr drive shaft the only reason I moved the track bar mount hole is because I pulled the sway bar cove and noticed clean spots on the sway bar indicating it shifted about 3/4in and looked at the end links and they were angled to the left I measured tire to frame on both sides an came up with about 13/8 in difference I do think its pretty close to center now.

But I agree it don't make sense. my neighbor has also lifted a few tjs and he has not had to make any adjustments on the track bar or ca with just a 2.5 in lift

is it possible my bearings, ball joint end on track bar , u-joints can be loose even though I cant get them to move even with a long pry bar.

btw I called a local shop who said they were familiar with dw told everything iv done and said next step is to add hd ss I don't like that answer because even with the ss installed it still shakes at 55 just not the
full out fit thanks again and btw I did tighten bushing bolts with 4 tires on ground

Last edited by rick1974; June 17th, 2013 at 08:54 PM. Reason: added coment
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Old June 17th, 2013, 09:37 PM   #26
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Steering stabilizers dont fix squat!
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Old June 17th, 2013, 11:42 PM   #27
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99% of death wobble is caused by a bad track bar or loose mounting holes with too small of bolts from what I see.
I dont know the history of your jeep but if it was in a accident or wheeled hard it could have a bent trac bar accounting for the 3/4" you had to move the hole to center the axle. I bent my original trac bar wheeling at rocks and valleys a few years ago.
If it did take a hit hard enough to bend it the joint would certainly fail at some point.

The axle ujoints should be easy to tell if they are bad. Look at the rubber seals to see how they fit the caps. A dry joint will usually be moving the seal around and disturbing the dirt and it will look distorted. Jack the tire up and spin it with the steering turned all the way in both directions. If you feel anything binding up you have a bad ujoint.

If you havnt yet , jack one tire up and have someone wiggle it back and fourth while someone holds the other tire still. Look at all of your tierods and steering linkage for any movement.
If you cant wiggle your tires up and down and back and forth with no movement your unit bearings are good. I have seen them be noisy with no movement.
If there is any doubt about your trac bar replace it with a napa premium, moog, or oem.
If you are going to more lift and need a adjustable dont be cheap, you get what you pay for.
Good luck. A good alighnment shop will find any bad parts before they align it and yes they can find stuff you wont. A bad alighnment shop recomend a heavy duty steering stab .
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Old June 17th, 2013, 11:56 PM   #28
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Quote:
Originally Posted by rick1974 View Post

is it possible my bearings, ball joint end on track bar , u-joints can be loose even though I cant get them to move even with a long pry bar.
Yes. Sometimes ball joints can be that way.
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Old June 22nd, 2013, 11:41 AM   #29
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I had the old dw, found out that my lower control arm bushings were bad. Nothing in the steering or ball joints was loose. I found mine when I backed up and hit the brakes and felt something move, yyou could actually see the front axle shift , couldn't see it going forward though.
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