Front end wobble - JeepForum.com

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post #1 of 16 Old 06-19-2017, 05:34 PM Thread Starter
xjrjrx
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Front end wobble

I am trying to chase down a wobble on my front end. I replaced my engine mounts and trans mounts and started to get death wobble these are the things I have done so far: alignment checked(they said it was spot on), road force tire balance(33x12.50x15 MTR with Kevlar), I have checked and rechecked torque on the lugs, jacked up front and checked wheel bearings and tie rod ends had someone steer left and right looking for loose steering parts, checked all suspension parts for loose bolts, rotated tires replaced bushings in track bar( I still need it cause I have a coil spring lift). I have had the lift on for about 5 years now and didn't start getting the wobble till after I replaced the engine and trans mounts (guessing all the vibes were going down my drivetrain) cause they were both in terrible shape. I also upgraded to a heavy duty steering and tie rod setup with the lift. No parts are loose or seem bent/damaged in any way. Where do I go from here I only get the wobble hitting a pothole on my driver side and my front end feels like it hops when I drive over 55 on a smooth road. I don't really want to take it anywhere but I don't know what else to check.

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post #2 of 16 Old 06-20-2017, 08:46 AM
grapehead
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What sort of coil system are you running? Maybe post some pics. Control arm bushings (assuming you have them) would be the next logical place to start looking for wear/damage.
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post #3 of 16 Old 06-20-2017, 12:13 PM Thread Starter
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I am running the procomp coil spring conversion I did check the bushings and made sure the bolts were all tight
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post #4 of 16 Old 06-20-2017, 12:34 PM
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I bet its your trac bar. Triple check that. Unbolt it and make sure the holes aren't egged out.
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post #5 of 16 Old 06-20-2017, 01:28 PM Thread Starter
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I pulled the track bar and replaced the bushings and checked the holes they were not ovals like I thought they would be. I seems really weird that it only happens when I hit a pothole on the driver side for the major wobbling or starts above 55 mph. I will pull it again and check it was pretty easy.
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post #6 of 16 Old 06-21-2017, 05:35 AM
bruinjeeper
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Sub'd same issue only at about 60mph and above.

But my rod ends are trashed.
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post #7 of 16 Old 06-21-2017, 08:28 AM
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Did you check your ball joints and unit bearings? I'm thinking unit bearing...


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post #8 of 16 Old 06-21-2017, 11:24 AM Thread Starter
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Quote:
Originally Posted by Randonexplosion
Did you check your ball joints and unit bearings? I'm thinking unit bearing...
I did check those also but I am really leaning towards that bearing there is no movement when I try and move anything when it's jacked up but like I said it's only the one side and it does it no matter what wheel I put up there I think I'll just replace the ball joints and bearing and see how that changes everything perhaps it's just starting to go out thank you randon
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post #9 of 16 Old 06-21-2017, 02:48 PM Thread Starter
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Any particular brand of bearing to get(or not to get) I was also gonna throw in new ball joints since I'll be in there
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post #10 of 16 Old 06-22-2017, 07:16 AM
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Check the bearings and ball joints before you just go blindly throwing parts at it. Jack up each corner by the axle tube til the tire is slightly off the ground. Jam a pry bar between the tire and the ground and pry up and down while observing the ball joints, looking for movement. Jack up the corner further, and grab the tire at 12 and 6, and attempt to move it. Any movement here is bearings. Grab the tire at 9 and 3 and attempt to move it, while observing the tie rod ends and drag link for movement. Post up results.
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post #11 of 16 Old 06-22-2017, 09:35 AM
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What provisions did you make for Caster when installing the coils? Has it been professionally aligned? Any "stretch" to the front LCAs and UCS?

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post #12 of 16 Old 06-22-2017, 01:07 PM Thread Starter
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Quote:
Originally Posted by Luuca
What provisions did you make for Caster when installing the coils? Has it been professionally aligned? Any "stretch" to the front LCAs and UCS?
The kit was installed by 4 wheel parts and it was aligned after the lift when I took it in for a new balance and rotation I asked for an alignment and they said it didn't need to be done.
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post #13 of 16 Old 06-22-2017, 02:45 PM Thread Starter
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I jacked it up and used a pry bar I have movement at 12 and 6
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post #14 of 16 Old 06-22-2017, 02:47 PM
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Quote:
Originally Posted by xjrjrx View Post
I jacked it up and used a pry bar I have a little bit of movement up and down I can see the rotor moving a little bit everything else is solid and doesn't move
I know this is the YJ forum, but I used this thread on DW to solve the issues on 2 XJs. It goes through it all for TJs and should help you know where and what to look at when you are prying up on the tires (hint the ball joins on the C)

http://www.jeepforum.com/forum/f9/di...rsion-2359089/
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post #15 of 16 Old 06-24-2017, 07:27 PM Thread Starter
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So had a little movement on the driver side tire at 12-6 and went for a drive and the driver side tire appears to wobble ever so slightly as if it has loose lug nuts around 25-35 mph the passenger side doesn't at all I checked all the lugs and steering knuckle bolts and everything is tight tight so bearing then??
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