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-   -   Death wobble (http://www.wranglerforum.com/f282/death-wobble-89413.html)

KidRock171 04-14-2011 08:33 PM

Death wobble
 
Subject beat to death I know but this one is interesting. I have developed a death wobble. Tires are balanced and I had no death wobble the two months between when I lifted and now. Just one day about a week ago. Pow. Death wobble. What happened/changed? Would adj. Rear upper arms help any?

Jerry Bransford 04-14-2011 08:37 PM

Please describe precisely what you are calling Death Wobble. What is it like, precisely? What makes it start and, more importantly, what do you have to do to make it stop?

ForumKing 04-14-2011 08:45 PM

Million dollar question... What lift kit are your running?

Scoob 04-14-2011 08:46 PM

Quote:

Originally Posted by ForumKing (Post 1179294)
Million dollar question... What lift kit are your running?

2.5 rough country according to his Jeep profile. KidRock171's Jeep Profile :: Raider Do I get the million for getting the answer right?

Jerry Bransford 04-14-2011 08:49 PM

Quote:

Originally Posted by Scoob (Post 1179297)
Do I get the million for getting the answer right?

You get a cookie. :p

http://images.art.com/images/product...0/11924179.jpg

KidRock171 04-14-2011 09:23 PM

Lolz. Y'all crazy. Violent shaking of front end, feels like trac bar and sway bar and everything are about to explode out of my jeep. Any where between 40 and 60 mph. Only way to stop it is to slam the brakes. It is set off from bumps in the road it's not a constant thing like usual where at exactly 47 mph it starts to shake. It has to be set off.

ForumKing 04-14-2011 09:27 PM

Check all your joints. RC kits are known to fail after only a few months of use which will cause Death wobble.

KidRock171 04-14-2011 10:36 PM

Joints on what?

Arch Stanton 04-14-2011 10:52 PM

That's similar to what has happened with my Jeep. It seems the bumps set off a chain reaction.

Quote:

Originally Posted by KidRock171 (Post 1179371)
Lolz. Y'all crazy. Violent shaking of front end, feels like trac bar and sway bar and everything are about to explode out of my jeep. Any where between 40 and 60 mph. Only way to stop it is to slam the brakes. It is set off from bumps in the road it's not a constant thing like usual where at exactly 47 mph it starts to shake. It has to be set off.


MP92 04-14-2011 11:53 PM

This happened to my tj too. What set mine off was going 50+, and interstate bridge bumps. I replaced the steering stabilizer and it stopped. But I've heard it could be one thing or a number of things too. My new shock say its recommended to be checked or changed every 12k miles.

jrussblues 04-14-2011 11:54 PM

Quote:

Originally Posted by KidRock171 (Post 1179520)
Joints on what?

Mine was from the front trac bar not being bolted down tightly enough. It was an easy oversight as it looked ok but upon further inspection was not. Try jacking up ur front end and seeing if anything shakes. I had to doublecheck all bolts with a wrench before I found the culprit. And good luck sir. These are no fun.

KidRock171 04-15-2011 12:55 AM

I'm gonna buy a set of rear adj. Uppers to aid mt UCF TT and tighten every damn bolt on my jeep n hope it stops.

Jerry Bransford 04-15-2011 01:20 AM

Before doing anything that costs $$$, do the old front-end check for anything loose or moving that shouldn't be. With the tires on the ground, have a helper repeatedly turn the steering wheel back & forth, back & forth, as you watch everything from the tie rod, drag link, track bar, control arms, etc. for any lateral movement. Especially the passenger-side of the track bar where it bolts to the axle where there should be absolutely zero side-to-side movement.

SmallsTJ 04-15-2011 11:05 AM

If everything is tight and nothing is wore out then its ur caster. Drag racers refer to it as exactly that caster wobble. When u lift ur Jeep and stock control arms u are changing ur caster angle. Just my opinion

KidRock171 04-15-2011 12:19 PM

So, after I do jerrys test. If nothing is loose. Rear uppers should help?

jrussblues 04-15-2011 12:23 PM

Anyone can jump in and correct me on this one. I believe that adjustable rear uppers will only help with driveline vibration not front end dw, 99% sure you've got something loose or not aligned.

Jerry Bransford 04-15-2011 12:34 PM

Adjustable rear upper control arms aren't going to help with DW.

SOMETHING is too loose in the front end and the DW is likely being triggered by a front tire that isn't perfectly balanced. A common object that is often just loose enough to allow DW, once triggered, to fully develop is the passenger-side mount of the track bar. The mounting bolt hole can be wallowed out, the bolt might be too loose, or the bushing inside the track bar at that end might be worn out.

KidRock171 04-15-2011 12:41 PM

If its loose...I will find it!
I'll be back on this thread after I check for results or more help.

SmallsTJ 04-15-2011 05:36 PM

Rear control arms???? Huh what lol

KidRock171 04-15-2011 06:23 PM

The front axle mount of the trac bar has almost a half inch of play when the steering wheel turns. But it's play in the rubber. Bolts tight sleeve tight just rubber squishing. Everything else is solid.

SilverTJMike 04-15-2011 06:46 PM

That's your problem, order a new track bar or play let the bushings on fire and replace it. I'd just replace the trackbar

jrussblues 04-15-2011 06:55 PM

Called it. I agree with mike. Get an adjustable. Much easier to put on and the best part is no more death wobble! Mine is bds but there are several companies make great ones.

KidRock171 04-15-2011 07:02 PM

Teraflex?

Jerry Bransford 04-15-2011 07:04 PM

If your budget is decent, go for a JKS or Currie track bar.

KidRock171 04-15-2011 07:05 PM

I was gonna get a jks rear. I guess I'll get a front also.

SilverTJMike 04-15-2011 07:10 PM

I'd stick stock, quite a few threads here on hitting aftermarket diff covers. Could be an issue but once you drill out there is no going back.

A Barnett should work but a new currie hit my riddler.

KidRock171 04-15-2011 07:15 PM

Quote:

Originally Posted by SilverTJMike
I'd stick stock, quite a few threads here on hitting aftermarket diff covers. Could be an issue but once you drill out there is no going back.

A Barnett should work but a new currie hit my riddler.

.....?
Although I do plan on getting a riddler eventually. But the riddler won't contact the stock trac bar as opposed to a jks or currie

jrussblues 04-15-2011 07:36 PM

.

KidRock171 04-15-2011 08:14 PM

^^^ that was a question.
Edit- WILL the riddler not contact a stock trac bar as opposed to an aftermarket.

SilverTJMike 04-15-2011 09:09 PM

Currie hit my riddler solid. Stock bar hit on rare occasion but never hung up like my new currie. Depend on lift, bump stops, angle of axle. Several thread here or jeep forum, Unlimited04 had a lot of research into it.

That said don't go to a new track bar in the front that is non stock without doing to due research!


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