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Jeep "death wobble"- I think I've got it. UPDATE pg 2

Posted on 7/18/12 at 10:40 am
Posted by PapaPogey
Baton Rouge
Member since Apr 2008
39421 posts
Posted on 7/18/12 at 10:40 am
Vehicle shakes violently when I drive over any decent bump in the road going 20+.

I have to pull over most of the time and it's a pretty freaky deal. Have heard an alignment will not help, and that's what I figured was the deal since I like to curb hop and what not. Anyone got any suggestions?

Eta: it's basically bump steer on steroids.
This post was edited on 7/18/12 at 2:22 pm
Posted by Motorboat
At the camp
Member since Oct 2007
22666 posts
Posted on 7/18/12 at 10:44 am to
steering box, loose lug nuts?

eta: do you have a lift and were all the necessary alignment precautions taken with castor and steering arm adjustment?
This post was edited on 7/18/12 at 10:47 am
Posted by PapaPogey
Baton Rouge
Member since Apr 2008
39421 posts
Posted on 7/18/12 at 10:47 am to
I've checked just about everything including my lift components and everything seems to be solid.
Posted by TigerDeacon
West Monroe, LA
Member since Sep 2003
29268 posts
Posted on 7/18/12 at 10:48 am to
You gonna die.


Sorry.
Posted by Clyde Tipton
Planet Earth
Member since Dec 2007
38725 posts
Posted on 7/18/12 at 10:48 am to
quote:

Anyone got any suggestions?


Mine did this when I put 33x12.50's on a 15x10 inch wheel. It was previously on 31x10.50's on 15x8 wheel with no lift... no problems.

I had to have it aligned damn near every time I rotated the tires.

I just thought it was a case of "the ride goes to shite when you lift one...".

Eta: it would last about 5K miles before it started doing it again. I bet there was 5 lbs. of lead on each wheel.
This post was edited on 7/18/12 at 10:51 am
Posted by Boats n Hose
NOLA
Member since Apr 2011
37248 posts
Posted on 7/18/12 at 10:49 am to
Ditch it, buy a ford
Posted by INFIDEL
The couch
Member since Aug 2006
16199 posts
Posted on 7/18/12 at 10:50 am to
Check ball joints
Posted by TexasTiger39
Member since Mar 2009
3671 posts
Posted on 7/18/12 at 10:50 am to
do you have a body or suspension lift?
Posted by Motorboat
At the camp
Member since Oct 2007
22666 posts
Posted on 7/18/12 at 10:51 am to
Have you checked the wheel bearings? Has anything recently occurred like you went wheeling and rubbed a rock? Any new mods to suddenly cause it?
Posted by hardhead
stinky bayou
Member since Jun 2009
5745 posts
Posted on 7/18/12 at 10:52 am to
quote:

TClayboy99


you sure it wasn't because I wrecked it?
Posted by 10Percenter
Member since Feb 2009
1925 posts
Posted on 7/18/12 at 10:54 am to
quote:

Have you checked the wheel bearings


This.
Posted by Motorboat
At the camp
Member since Oct 2007
22666 posts
Posted on 7/18/12 at 10:57 am to
quote:

wheel bearings


to check them, jack up the tire. grab the tire at 12 and 6 o'clock and move back and forth. then grab at 3 and 9 and move back and forth. If you have play in either directions, then you may have worn bearings.
Posted by HeadBusta4LSU
Baton Rouge
Member since Aug 2007
11312 posts
Posted on 7/18/12 at 10:58 am to
I vote wheelbearings
Posted by Motorboat
At the camp
Member since Oct 2007
22666 posts
Posted on 7/18/12 at 10:59 am to
yeah but it may also be a tire that is out of balance assuming all of his castor is in spec. 90% of these problems are castor related.
Posted by Clyde Tipton
Planet Earth
Member since Dec 2007
38725 posts
Posted on 7/18/12 at 11:00 am to
quote:

you sure it wasn't because I wrecked it?


Nah, that was just body damage.
Posted by PapaPogey
Baton Rouge
Member since Apr 2008
39421 posts
Posted on 7/18/12 at 11:00 am to
I'll ask them about the wheelbearings when I get to the shop. Thanks

As for the lift, Jeep is a unibody, so it's suspension. 2.5" coil spacers in the rear and 3" coils in the front.
Posted by Clyde Tipton
Planet Earth
Member since Dec 2007
38725 posts
Posted on 7/18/12 at 11:05 am to
quote:

2.5" coil spacers in the rear and 3" coils in the front.


Exactly what I put on my jeep. 5K miles later... it started.
Posted by PapaPogey
Baton Rouge
Member since Apr 2008
39421 posts
Posted on 7/18/12 at 11:07 am to
Well I've had this setup since November 2006, and it's never been this bad.
Posted by Clyde Tipton
Planet Earth
Member since Dec 2007
38725 posts
Posted on 7/18/12 at 11:13 am to
Maybe my bearings were already out, or on their way out.

I put 80K miles on my jeep before I lifted it. I went through the wobble realign process about 4 times and traded it in with around 100K on it after a fresh alignment while it was still driving good.

Posted by Jester
Baton Rouge
Member since Feb 2006
34246 posts
Posted on 7/18/12 at 11:13 am to
quote:

Jeep


Problem solved. Seriously, at least you aren't replacing the transmission this time around.
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