wobble

TJ shimmy... Its the Harmonics between 38-42 MPh we all have it to one extent or another. Mine is better since I recently replaced My tires. But, I can still feel it slightly if conditions are just right. Guys have spent thousands of dollars replacing parts and Not cured the issue. I have chosen to leave well enough alone, It's inherent to the beast and the straight axle frontend. As long as it dosent become full blown death wobble I'm not gonna fix it cause it aint broke. JMHO tho. probably lots of opinions on what you should replace and why though.

Solved most of mine by replacing my steering stabilizer with the Monroe SC2928.

i had a serious wobble at 45-50 and that all went away when i installed the Rokman lower CAs. only thing i can think of were the bushing were shot! id check out some of your bushing and make sure all are tight and not free moving

rubitx said:

Solved most of mine by replacing my steering stabilizer with the Monroe SC2928.

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The steering stabilizer hides the problem, not fixes it.

Yes, the topic has been covered a lot and there are so many variables that contribute to the problem. Most likely, it's the bushings. You really cannot tell visually but myself and many others changed them out (even the ones in the top of the housing) with parts store replacements, and the wobble went away. I'm assuming you checked everything else to make sure it was tight like the trackbar/bushing - no slop, ball joints were good, wheel bearings are good (non-serviceable), etc?

jeffj78 said:

Yes, the topic has been covered a lot and there are so many variables that contribute to the problem. Most likely, it's the bushings. You really cannot tell visually but myself and many others changed them out (even the ones in the top of the housing) with parts store replacements, and the wobble went away. I'm assuming you checked everything else to make sure it was tight like the trackbar/bushing - no slop, ball joints were good, wheel bearings are good (non-serviceable), etc?

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Yeah everything appears good. What bushing did everyone replace?

I did the lower CA bushings first, then I changed out the upper CA bushings. The one bushing right above the diff is hardest to remove because of the location.

jeffj78 said:

I did the lower CA bushings first, then I changed out the upper CA bushings. The one bushing right above the diff is hardest to remove because of the location.

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Ok, i will check these. You said parts store replacements? Does autozone and such carry them? Thanks!

It's been a while but I think I hit Napa. Any place should carry them. I believe they are all made by Moog and then just relabeled.

I always thought my 37-39 mph vibration in the steering wheel was from my rear driveshaft. I can rotate and re-mount the flange on the balancer and change it......but can't eliminate the vib or move it to a different speed range.

To test that theory, remove the rear ds, put the vehicle in 4hi and run it. See if the vibe persists. I had a few driveshafts that weren't balanced as new...I wouldn't do it for an extended period of time but driving it w/o the rear ds installed will definitely tell you if the vibe is related.

I just found that I have a bad rear shock. I wonder if that could have anything to do with it?

When you say bad, are we saying leaking, broken...? In the front I would say yes, it's a good possibility but the back, I'm not so sure.

jeffj78 said:

When you say bad, are we saying leaking, broken...? In the front I would say yes, it's a good possibility but the back, I'm not so sure.

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It is leaking and cracked at the base. Either way more upgrade possibilities!

I would check the tough on the front tire's.My wobble went away after we set the tough right it was out over 1" it's better now .

FYI, there is a Technical Service Bulletin (TSB) for a free upgraded HD steering stabilizer with my '05. I believe it went with other years too.

the trackbar/bushing. Put you hand on both the lower and upper track bar bushing while having someone else m,ove the steering wheel bck and forth slightly. If that bar is moving enough to be felt I bet that is where your wobble is originating.

I am on my 3rd one on a JKS track Bar for the same problem.