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I'm at a loss with this wobble

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Offline CaribouActual

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I'm at a loss with this wobble
« on: February 15, 2016, 06:36:28 PM »
I recently switched out from 35" Swampers to 35" BFG K0's and I'm getting death wobble every time I hit a bump. Changed out the track bar, the tie rod and ends, drag links and ends, got the wheels balanced, got an alignment, tightened everything up, checked bearings, axels are good, and I still get it when I hid a bump. No idea what more I could check for. Only happened once I switched to these wheels and tires. Any ideas or help is greatly appreciated...

Offline This.Side.Up

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Re: I'm at a loss with this wobble
« Reply #1 on: February 15, 2016, 06:53:49 PM »
Make sure your bolts are properly torqued to specs. Not sure for an LJ but do a search here and you should find a thread with torque specs.
Also make sure the bolts are the right diameter in the track bar. Factory bolts on JK are actually too small and contribute to death wobble.

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Offline CaribouActual

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Re: I'm at a loss with this wobble
« Reply #2 on: February 15, 2016, 06:59:37 PM »
You're right; I'll have to grab a torque wrench and redo them. As far as the bolts, it's the rubicon express trackbar, so those are good to go as far as hardware since it's pretty specific.

Offline stump

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Re: I'm at a loss with this wobble
« Reply #3 on: February 15, 2016, 07:09:53 PM »
Check your ball joints.


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Offline Richard

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Re: I'm at a loss with this wobble
« Reply #4 on: February 15, 2016, 10:10:44 PM »
You're right; I'll have to grab a torque wrench and redo them. As far as the bolts, it's the rubicon express trackbar, so those are good to go as far as hardware since it's pretty specific.
Check the holes in the brackets and see if they're egg shaped.
Contact for gear installs or custom fab work.

Offline TheBostonWrangler

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Re: I'm at a loss with this wobble
« Reply #5 on: February 15, 2016, 10:13:15 PM »

Check your ball joints.


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So much this.
Mnopgr

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Offline CaribouActual

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Re: I'm at a loss with this wobble
« Reply #6 on: February 15, 2016, 10:55:17 PM »
How do y'all propose I check the ball joints?

Offline stump

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Re: I'm at a loss with this wobble
« Reply #7 on: February 15, 2016, 11:00:23 PM »
YouTube checking ball joints


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Offline CaribouActual

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Re: I'm at a loss with this wobble
« Reply #8 on: February 15, 2016, 11:47:08 PM »
My point is I ran through the preliminary checks already. Unless there's another way that's a dead eye for checking these things. My last guess is to replace the control arms and adjust the angles since I put "smaller" wheels on recently.

Offline stump

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Re: I'm at a loss with this wobble
« Reply #9 on: February 16, 2016, 09:03:27 AM »
You could take off the wheel, the caliper, the rotor, remove the knuckle, and then grab a hold of your ball joints.  If they move, they are busted. When I had death wobble, we did all of the same things you did, then I checked the ball joints and there was my issue.


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Offline CaribouActual

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Re: I'm at a loss with this wobble
« Reply #10 on: February 16, 2016, 10:41:45 AM »
Alright, I guess that'll be the next test for them. I had tried everything I could to check without entirely removing everything. But, good deal. Glad to hear that solved the issue, I'm just going to go ahead and replace those too then. Were you picky on brand? And did you replace every one of them?

Offline stump

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Re: I'm at a loss with this wobble
« Reply #11 on: February 16, 2016, 11:26:00 AM »
I did teraflex.


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Offline CaribouActual

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Re: I'm at a loss with this wobble
« Reply #12 on: February 16, 2016, 11:27:39 AM »
I'll look into it. Thanks for the input. Ordering parts later. Who around here can help with a home install? Looking to meet some new folks and get some hands on with fixing it up.

Re: I'm at a loss with this wobble
« Reply #13 on: February 16, 2016, 02:32:50 PM »
I had death wobble on my Lj it ended up being the control arm bushings


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Offline CaribouActual

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Re: I'm at a loss with this wobble
« Reply #14 on: February 16, 2016, 03:31:59 PM »
That's what I'm hoping fixes this. Buying new ball joints is going to have to wait for next payday. Looked at the control arms and one is a little beat. So, fingers crossed this helps.