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Right Rear Thumping Sound!!

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Old Oct 14, 2008 | 09:20 PM
  #1  
1stC3Vette's Avatar
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Default Right Rear Thumping Sound!!

72 Coupe / Automatic - all stock.

I just started to get a thumping sound in the right rear wheel. When I apply the brakes, it goes away. My first assumptions is that one of they caliper pistons is not returning far enough into the caliper. I had replaced all 4 calipers two years ago and had the rear end done last year.

Does this sound legit? I have searched it out, but no one has said the sound goes away when braking. Even if I apply light braking, the sound goes away and it is only on the drivers right rear side.

Thanks,
Dino
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Old Oct 14, 2008 | 10:37 PM
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I assume you've checked the tire and the lug nuts??
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Old Oct 15, 2008 | 07:28 AM
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and u-joints?
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Old Oct 15, 2008 | 07:57 AM
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I haven't had a chance to check the lug nuts yet, but unless they have loosened unexpectedly, I don't think this is the problem. I really torque them down when plutting my tires back on.

The u-joints are spicers and they are only about a year old. I will check them out this weekend.

The fact that it stops when I apply brake pressure is where I get stumped.

Thanks,
Dino
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Old Oct 15, 2008 | 08:04 AM
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make sure the caliper isnt loose.. i would remove the wheel and check out the trailing arm and everything on that side. just a thought.
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Old Oct 15, 2008 | 10:38 AM
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i had a similar problem and it turned out the spindle nut was loose, you might want to check it.
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Old Oct 15, 2008 | 12:11 PM
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Whey you apply the brakes, it puts a load on the wheels/drivetrain. Whatever is 'loose' apparently tightens up with that additional load.
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Old Oct 15, 2008 | 04:51 PM
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1stC3Vette -

Please let us know what the outcome was, as I have the same issue & can't identify the problem.

Thanks ! Jay
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Old Oct 15, 2008 | 05:19 PM
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rear wheel bearing. mine made clicking noise followed by a low thump noise when it went.
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Old Oct 15, 2008 | 06:21 PM
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Originally Posted by 7T1vette
Whey you apply the brakes, it puts a load on the wheels/drivetrain. Whatever is 'loose' apparently tightens up with that additional load.
I thought about that. I only apply a touch to the brake pedal and it goes away.

I will check it out this weekend and report back what I find (if anything..)

Thanks,
Dino
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