Rear of car shifts side-to-side sometimes
07-30-2014, 10:22 AM
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Car: 1987 Trans Am GTA
Engine: 5.0 TPI
Transmission: Auto
Rear of car shifts side-to-side sometimes
As the title says.... I have noticed that my sons GTA shifts from side-to-side once in a while while driving. I noticed this a few days ago when I was driving behind him. AND I noticed yesterday that the outter treads on the rear tires are wearing unevenly.
And ideas, suggestions ???
And ideas, suggestions ???
07-30-2014, 11:21 AM
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Car: 89' IROC-Z
Engine: LO3
Transmission: 700R4
Axle/Gears: 10-Bolt/2.73
Re: Rear of car shifts side-to-side sometimes
Sounds like axle-walk. Could be bushings in the rear too.
Last edited by I H8 WWD; 07-30-2014 at 11:25 AM.
07-30-2014, 04:12 PM
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Car: 89' IROC-Z
Engine: LO3
Transmission: 700R4
Axle/Gears: 10-Bolt/2.73
Re: Rear of car shifts side-to-side sometimes
Yes. Check all bushings holding that rear end on. Lower Control Arms, Panhard Bar (check brackets too) Sway Bar End Links.
07-30-2014, 05:06 PM
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Car: Base 91 'bird
Engine: 3.1 v6
Transmission: 4L60
Axle/Gears: 9-bolt 3.27 & PBR
Re: Rear of car shifts side-to-side sometimes
Push sideways on a rear fender. If the car moves sideways at all and maybe clunks then most likely the PHB is loose but check the other stuff too.
07-30-2014, 05:11 PM
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Car: '89 Formula
Engine: LS2
Transmission: 4L65E
Axle/Gears: MW 3.42 12 Bolt
Re: Rear of car shifts side-to-side sometimes
Put a big feather in the backhatch and turn up the music
Seriously,
Most likely bushings: panhard bar, lower control arms, shocks can get sloppy, and torque arm. Those are the only attach points.
Worse case: axles.
Seriously,
Most likely bushings: panhard bar, lower control arms, shocks can get sloppy, and torque arm. Those are the only attach points.
Worse case: axles.
07-30-2014, 05:14 PM
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Car: 1987 Trans Am GTA
Engine: 5.0 TPI
Transmission: Auto
Re: Rear of car shifts side-to-side sometimes
Could it possibly be something as simple as bad shocks ??
Last edited by TX-SleeperC5; 07-30-2014 at 08:58 PM.
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08-13-2014, 08:02 PM
#9
Re: Rear of car shifts side-to-side sometimes
I had once not used a tiny bit of thread locker on the Panhard bolt, and it had backed off enough to allow about a millimeter worth of play.
I could FEEL it the minute it backed off. Crossing over a crown in the road, or any time the camber of the road changed the back end of the car would shift.
Needless to say I used a bit more thread lock on it. The thought of losing the PH bar at speed scares the crap out of me. If that happens no amount of skill will control the car, you are going along for the ride.
Make sure all the suspension stuff is tight.
I could FEEL it the minute it backed off. Crossing over a crown in the road, or any time the camber of the road changed the back end of the car would shift.
Needless to say I used a bit more thread lock on it. The thought of losing the PH bar at speed scares the crap out of me. If that happens no amount of skill will control the car, you are going along for the ride.
Make sure all the suspension stuff is tight.
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