Rear end wobble, Need Advice Please - TCCoA Forums
 
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post #1 of 9 (permalink) Old 04-06-2004, 06:50 PM Thread Starter
 
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Question Rear end wobble, Need Advice Please

For a long time, I've been noticing a wobbly feeling from the rear end. The car sort of shimmies from side to side noticeably. This only happens from 5-15mph and then goes away around 17mph.

I just got a 4wheel alignment done yesterday and it didn't make it go away. I am wondering if it may be the hubs back there?

Has this happened to anybody else?
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post #2 of 9 (permalink) Old 04-06-2004, 10:44 PM
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Quote:
Originally posted by BatLCat
For a long time, I've been noticing a wobbly feeling from the rear end. The car sort of shimmies from side to side noticeably. This only happens from 5-15mph and then goes away around 17mph.

I just got a 4wheel alignment done yesterday and it didn't make it go away. I am wondering if it may be the hubs back there?

Has this happened to anybody else?
My guess would be tire balancing or broken belt - something like that. Swap the rear tires to the front - one at a time - and see if the shimmy moves. If so, you can isolate that wheel/tire.

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post #3 of 9 (permalink) Old 04-06-2004, 10:48 PM
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have you checked your axle shaft retainer nuts and the bearings?

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post #4 of 9 (permalink) Old 04-07-2004, 10:19 AM
 
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Jack the car up so that both rear wheels are off the ground and shake around the wheels. That' should give you an idea of which side, and where the problem is. I'm with tbirdbrain on this one, I would check that first, then just keep moving inward until you find the problem. If it was a tire, the problem would probably get worse as speed increases, instead of just feeling it at low speeds.
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post #5 of 9 (permalink) Old 04-07-2004, 02:32 PM Thread Starter
 
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After getting the car up to 70mph for the first time since the alignment 2 days ago, I have determined that while the vehicle wobbles a bit at low speeds, the car begins to shake from about 65-75mph and then smooths out before and after these speeds.

I think it may be the wheel bearings. Kind of sucks too because I have to drive the car 1700 miles in the next week and a half! Fortunately, the car will be parked for 3 days, so I may just have it inspected and fixed after the first 800 miles.

I'm pretty certain it isn't my tires, as an out-of-balance problem wouldn't be apparent at really slow speeds and would increase exponentially as the tire RPMs increase with speed.
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post #6 of 9 (permalink) Old 04-19-2004, 03:15 PM Thread Starter
 
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I spoke with a guy at a Goodyear shop in UT and he showed me that a majority of my rearend shaking and wobble was from my tires seperating from the inside. I promptly replaced them and, while the tail wagging and wobble is gone at low speeds, I still feel the shaking at speeds in excess of 70mph, just a little less now.

The shaking comes and goes now, so I'm still going to look into the bearings.

Any idea how much it will cost to replace my rear wheel bearings? The guy at goodyear told me $300 a side, which I find a little inflated.
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post #7 of 9 (permalink) Old 04-20-2004, 07:43 AM
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I had goodyear tires on a 77 Impala Station Wagon. I had the side-to-side shimmy on one tire...the speeds mentioned were similar to what you have mentioned. Turned out to be ply separation. They were relatively low-mileage tires also...about 12000 miles on them.

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post #8 of 9 (permalink) Old 04-20-2004, 10:17 AM
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I think $300 a side is a bit much. It's a common problem and the passenger side is normally the one that goes first since it's the "power" side.

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post #9 of 9 (permalink) Old 04-20-2004, 11:19 AM
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If you go to all that work to pull off the control arm, it's a shame not to replace the bushings also....maybe that was included in the $300 per side? Still seems a little steep to me.

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