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Old 03-16-2017, 06:31 PM
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Front end shaking over bumps

I've posted a few times about a front end shake that I have and still haven't fixed it.

When I go over uneven patches or pot holes (no matter the size), it feels like my front end shakes up and down. I don't know exactly what it is doing but it feels like my wheels (and all the steering and suspension parts) are bouncing up and down. It does stop as soon as I go over the pot hole which makes me believe it isn't death wobble.

First thing I did was replaced the track bar with a Synergy one and installed the bolt upgrade kit. I did notice that the axle side mounting hole was slightly enlarged (even for the 9/16" bolt). Not sure if that would cause the issue even when torqued to 125.

My ball joints and tie rod ends were shot so I just replaced those with Teraflex and a Yeti tie rod assembly. That seemed to help but not fully. It was smoother over little pot holes but still not fixed.

I just replaced my shocks with Rancho 5000X and again that helped a little but not fully.

Now when I go over larger uneven patches, it doesn't seem to shake as violently but it still shakes. Before it would sound like the front end was going to fall off.

I just don't know what else to do. The only larger part that I haven't replaced is the drag link. The drag link does seem to have a lot of movement. I'll try to post a video. I may have a local Jeep shop fix the enlarged track bar mounting hole. There was play with the 9/16" bolt but it wasn't a lot. I'm just not sure what else to do. It is starting to get really frustrating. Any recommendations on what else to look into?

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Old 03-16-2017, 06:37 PM   #2
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Have you replaced the bump steer shock yet? The so called death wobble doesn't have to be present for excessive feedback from bumps and pot holes.

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Old 03-16-2017, 06:46 PM
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Have you replaced the bump steer shock yet? The so called death wobble doesn't have to be present for excessive feedback from bumps and pot holes.
I have not replaced that. How can I tell if that is bad?

Few other things I forget to mention. I replaced the steering stabilizer with Teraflex. I don't have any kind of lift either. I do seem to have a bad intermediate shaft. When I turn my steering wheel I can hear and feel a click.

Just in case it is relevant, it is a 2011 JKU with 47k

Here is a video of the play I have in my drag link. Sorry for it being flipped.

http://www.youtube.com/watch?v=s3iskWEVxXg
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Old 03-16-2017, 07:24 PM   #4
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I have not replaced that. How can I tell if that is bad?

Few other things I forget to mention. I replaced the steering stabilizer with Teraflex. I don't have any kind of lift either. I do seem to have a bad intermediate shaft. When I turn my steering wheel I can hear and feel a click.

Just in case it is relevant, it is a 2011 JKU with 47k

Here is a video of the play I have in my drag link. Sorry for it being flipped.

http://www.youtube.com/watch?v=s3iskWEVxXg
I thought that was the root cause of my problem. Mine does the same thing, and so does my wife's - except her suspension doesn't make the sound I'm having so I ruled that out.

One thing for me, is I don't feel or hear a click on neither of our Jeeps.
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Old 03-16-2017, 07:32 PM   #5
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Front end shaking over bumps

You will get a shimmy with a bad drag link.

Fyi replacing the steering shock will only mask the issue. Fix whats broke first then the stabilizer IF its worn.

Edit: did you have someone turn the wheel back and forth? Moving the drag link by hand is not going to show if its bad.


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Old 03-16-2017, 07:36 PM
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One thing for me, is I don't feel or hear a click on neither of our Jeeps.
Are you referring to the click in the drag link you can hear in the video or the click I was talking about in my steering wheel?

I see you are in RI too. I may bring my Jeep to Barrette Fabrication in Warwick to see if they can diagnose it. I'd like to figure it out myself but so far I haven't been able to.
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Old 03-16-2017, 07:40 PM
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You will get a shimmy with a bad drag link.

Fyi replacing the steering shock will only mask the issue. Fix whats broke first then the stabilizer IF its worn.

Edit: did you have someone turn the wheel back and forth? Moving the drag link by hand is not going to show if its bad.


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The SS was worn which is really the reason I replaced it. I knew it wouldn't fix the problem I'm having.

I haven't but I will try to see if I can tonight. By moving the steering wheel do you mean quick back and forth or lock to lock? And what should I be looking for on the drag link? Up and down movement and clicking?
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Old 03-16-2017, 07:53 PM   #8
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Old 03-16-2017, 08:18 PM   #9
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Originally Posted by h22lude View Post
Are you referring to the click in the drag link you can hear in the video or the click I was talking about in my steering wheel?

I see you are in RI too. I may bring my Jeep to Barrette Fabrication in Warwick to see if they can diagnose it. I'd like to figure it out myself but so far I haven't been able to.
I was referring to both, but I still am in the learning stage. The issue I'm having almost sounds like yours but I think it may be different. I want to get my Jeep up on stands again to check things out, but my garage floor is a mess from water, sand and salt from our Jeeps and the snow thrower.

I heard good things about Barrette Fabrication, but do not have any personal experience.
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Old 03-16-2017, 08:26 PM
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I was referring to both, but I still am in the learning stage. The issue I'm having almost sounds like yours but I think it may be different. I want to get my Jeep up on stands again to check things out, but my garage floor is a mess from water, sand and salt from our Jeeps and the snow thrower.

I heard good things about Barrette Fabrication, but do not have any personal experience.
My plan is to torque everything to spec again and see if that helps. When I had the ball joints installed, I asked if he could torque everything. It did seem to be better right after install and has slowly gotten worse again. Wonder if the nuts are loosening up and the enlarged track bar hole is causing this. I'd think 125 ft lbs would be tight enough to keep it from loosening up that quick but maybe I'm wrong. I was looking at the Teraflex bracket that helps with this issue. I think it was $10 but then I'd need someone to weld it (which I would probably go to Barrette).
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Old 03-16-2017, 09:08 PM   #11
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I have not replaced that. How can I tell if that is bad?
Easiest way is to basically remove it if you see no leaks from the piston and push and pull the piston with some quick movements. If it moves with ease....it's bad. If you feel sudden resistance you're good. Look for seepage first.

The movement you have is from the ball style joint. Usually normal. Hard to tell in your video though. As is mentioned. Have someone you trust to get in and steer side to side while you watch it. That will give you the better indicator of what's going on.

For some others on the clicking (not likely yours) don't rule out the quick disconnects if you have them.
Cheap ones can wear out at the release pins allowing excessive play on vehicle weight change from side to side. Also can give the feel of floaty out of control steering on the road with dips and curves. Too many times see this at the shop and the owner assumes its "death wobble"
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Old 03-19-2017, 07:28 PM
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What about replacing the control arm bushings with the ones from Rugged Ridge? https://www.quadratec.com/p/rugged-r...ep-wrangler-jk Seems like a cheap upgrade that could fix part of the problem.

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