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Old 07-05-2013, 07:47 PM   #1
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Death Wobble

I have a 2007 Unlimited X JK Wrangler with a 4'' Rough Country suspension lift. I am having trouble with death wobble. I have had 4 alignments, tires balanced and rotated, new lower control arms put on, and taken it to 6 shops with no luck. Any ideas? HELP

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Old 07-05-2013, 07:50 PM   #2
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Did you read the death wobble thread under the stickies?

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Old 07-05-2013, 07:57 PM   #3
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Quote:
Originally Posted by Theairhead View Post
Did you read the death wobble thread under the stickies?
X2 BUT

DW is almost always Track bar related. Have another person turn the wheel 9-3 while you look at the Tb mounts. Remove the Tb if you have to and check the holes for wear.

Do you have alignment numbers ?
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Old 07-05-2013, 08:00 PM   #4
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Did you make sure all the TB bolts were torqued properly? And with the lift did you do anything to the TB at all? Drill new holes, get relocation brackets, or just buy a new one?
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Old 07-05-2013, 08:39 PM   #5
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I put new relocation bracket on it. I will have to check the torque on them. My alignment numbers were matched with what rough country recommended 4.6 4.3 range I don't remember my toe in and out but was in range. I will check over the TB and see what I can come up with thanks.
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Old 07-05-2013, 08:46 PM   #6
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Relocation bracket for the front?

Drop bracket and drop pitman arm ?
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Old 07-05-2013, 08:54 PM   #7
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Yes the bracket is up front on the track bar, and i do have a drop pitman arm
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Old 07-05-2013, 08:56 PM   #8
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Yes the bracket is up front on the track bar, and i do have a drop pitman arm


Def check that bracket for any looseness.
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Old 07-05-2013, 09:01 PM   #9
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I will check in the morning thanks
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Old 07-05-2013, 09:10 PM   #10
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Also if it's in your budget i would recommend a adjustable track bar.
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Old 07-05-2013, 11:13 PM   #11
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What exactly is the death wobble? I have an 08 JKU and I frequently off road it while running 35s with a 4" lift but have never heard any significant wobbling or rattling.
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Old 07-05-2013, 11:37 PM   #12
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Regarding the front track bar bracket, raising the front track bar (assuming yours is a stock one with the bracket) affects the steering wheel geometry.

I'm going to go with TB related too but there could be several things involved here since you have the bracket in addition to worn, ovaled out or loose TB bolts.
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Old 07-06-2013, 03:37 AM   #13
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Quote:
Originally Posted by ESP View Post
Regarding the front track bar bracket, raising the front track bar (assuming yours is a stock one with the bracket) affects the steering wheel geometry.

I'm going to go with TB related too but there could be several things involved here since you have the bracket in addition to worn, ovaled out or loose TB bolts.
Fwiw there's a few ways to correct steering geometry.
- lower the track bar by the frame and install a drop pitman arm. This is what the Op has.
- lower the track bar by the frame but flip the drag link over the knuckle. Teraflex does this but also incorporates a bar that attaches to the frame for strength.
- raise the track bar by the axle and flip the drag link over the knuckle.

Raising the track bar and flipping the drag link is the most common and best way to do it. Raising the track bar (axle) also raises the front roll center, another important aspect of geometry. More importantly, adds strength to the weak factory axle mount.
Flipping the drag link takes stress out off your sector shaft/steering box with the running at a flatter angle.
A drop pitman arm does the opposite and adds stress to the already weak sector shaft/steering box. With a TB lowering bracket does nothing for roll center.

Doing one without the other messes with the geometry and will cause bumpsteer.
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Old 07-07-2013, 08:20 AM   #14
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thanks guys for all the help im going to work on it today and hope to fix it
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Old 07-07-2013, 10:48 AM   #15
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I checked the track bar bracket today and it was tight the bolts looked good the holes looked good as well. Do i need to get an adjustable track bar? How do i flip the drag link over the knuckle?
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Old 07-07-2013, 11:15 AM   #16
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Quote:
Originally Posted by TreyJK View Post
What exactly is the death wobble? I have an 08 JKU and I frequently off road it while running 35s with a 4" lift but have never heard any significant wobbling or rattling.
Death wobble is a vibration / wobble wherein once it happens to you, you know it. It's not something subtle at all.

Jeep Death Wobble - YouTube

OP, hope you track it down soon. In spite of the guys in the video above who are laughing, I know it ain't funny -- not one bit.
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Old 07-07-2013, 11:39 AM   #17
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X2

Flipping the drag link fixes steering issues on lifts 3" or more. Probably not going to help you.
A adjustable track bar is a great option but won't fix anything if the stock bar is fine.

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