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Rear clunking sound and vibration

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Old 03-07-2017, 10:53 AM   #1
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Default Rear clunking sound and vibration

I have a 94 z28 with a t56 and I recently replaced the opti. That front of the car was on jack stands for about 4-5 weeks. Now whenever I drive the car, I have this bad vibration. Almost like a wobble vibration that kind of correlates with speed. There is a fast intermittent clunking sound that comes from the passenger rear area too. I'm not sure as to what is causing this vibration and sound. Any help would be greatly appreciated! Thanks!
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Old 03-15-2017, 02:58 PM   #2
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possible transmission mount needs to be replaced or tightened. slide a jack under trans and jack up a little see if it separates from crossmember
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Old 03-15-2017, 03:00 PM   #3
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also check the torque arm to rear differential bolts
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Old 03-16-2017, 08:35 AM   #4
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With the age of the vehicle make sure that the rear torque arm bolts are tight at the housing and that the LCA and PHB are not warn out. Also make sure the tires do not need to be balanced.
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Old 03-17-2017, 01:29 PM   #5
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Re balance rear tires

Drain and replace rear diff fluid and inspect for damage

Inspect Driveshaft u joints for rust or damage to drive shaft
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Old 03-17-2017, 07:36 PM   #6
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Check your calipers and pads too
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