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Old 10-04-2007, 01:48 PM   #1
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a little shimmy..

Ok, my saga continues.

The jeep has developed a shimmy at low speeds. It's like it's studdering. It's not the engine I don't think and I've sat under that damn thing tightening and checking and I can't get rid of it.

what do you guys think it could be?

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Old 10-04-2007, 01:54 PM   #2
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Tires out of balance?

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Old 10-04-2007, 02:05 PM   #3
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I never thought about my tires. I figured they'd be a problem at any speed if they were out... maybe all that banging around on the rocks at BigBear took a weight or something off?

The shimmy is enough to rattle my hi-lift.
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Old 10-04-2007, 02:37 PM   #4
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It could be the tires. I would start there as it's not an uncommon problem and it's an easy fix.
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Old 10-04-2007, 02:40 PM   #5
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Since you've already tightened everything up...I'd not only check the wheel/tire balance...but also have a good look at your drive shafts. The rear shaft takes a beating and sometimes the little tack welded balance weights can get stripped off and that can cause a maddening vibration or "shimmy". I had a U-joint go south on my rig that caused me some grief as well.

Just my two cents... Probably is just a little out of balance...or mud build up in a wheel or something easy like that.

Hope you find it, that stuff makes me crazy...
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Old 10-04-2007, 02:56 PM   #6
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Do you feel the vibration in the pedals, or in the steering wheel?
Might try just rotating the tires front to back and see what changes.
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Old 10-04-2007, 02:58 PM   #7
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Hmm...... no, like I said it shakes the hi-lift on my front bumper (I forgot to mention it was there). Started happening after my last trip to BigBear, but I didn't think I'd dropping onto anything.... well... maybe I did. Could something be bent?
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Old 10-04-2007, 03:47 PM   #8
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Could be anything, real hard to diagnose like that on the web. Any way you could take a pic under the front end?

So where do you feel the shimmy, or is it just that its rattling the hi-lift?
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Old 10-04-2007, 03:48 PM   #9
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Quote:
Originally Posted by myanarchy View Post
Do you feel the vibration in the pedals, or in the steering wheel?
Might try just rotating the tires front to back and see what changes.
X2 - if its in the steering wheel its a tire.
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Old 10-04-2007, 04:45 PM   #10
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I always go on this. If I feel it in my feet is front end and if I feel it in seat it's in the rear. (Yes does sound stupid but WHATEVER. )

TT, when you lift a TJ/YJ with the stock shaft it pulls out of the slip yoke some. This also puts your ujoints on a different plane then they were used to. Hence the vibrations. You've combatted this with a bit of a TCase drop and a BL/MML, but as you wheel it and things hit on other things. You can easily out of balance your driveshafts which tends to throw all that work out that you did to get rid of the vibes.

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