C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
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Old May 8, 2010 | 07:57 AM
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Default click click click

this is the noise I get when slowing down. I don't think I hear it under accel. Seems to be behind me. I don't feel any slack in U-Joints with car on stands. Rear end has a little play, but for it's age, it is doing better than I am (my rear drags a lot).

I can't really tell which part, don't have the extra cash to play R&R so I am asking my brothers and sisters here for the most likely starting point.

thanks in advance
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Old May 8, 2010 | 08:28 AM
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Check parking brakes
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Old May 8, 2010 | 07:11 PM
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Stone stuck in the wheel tread. Real easy fix!
Parking brake components.
Bent wheel backing plate.

Any of the above and a list of other causes.

Jack up the car. Rotate wheels by hand and determine the source.
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Old May 8, 2010 | 07:32 PM
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Originally Posted by dannyman
Stone stuck in the wheel tread. Real easy fix!
Or a rock stuck in a vane of the rotor?

I had my clip for the ebrake turn and was clicking against the wheel weights on the inside of the wheel.
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Old May 9, 2010 | 12:50 AM
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If you suspect the click is coming from the wheel bearings, raise the rear of the car and turn each wheel. A brinelled bearing will click with every two turns of the wheel. Some play is fine but not sure how much is tolorable.

Last edited by Oldguard 7; May 9, 2010 at 03:13 PM.
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Old May 9, 2010 | 01:22 AM
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I am almost certain it is the needle bearings in the U joints on the half shafts. Look at the passenger side first.
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Old Jun 4, 2010 | 05:18 PM
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Default not that

new u-joins in half-shafts and oil change in diff and click is still here. will do drive shaft u-joints tomorrow.

If it is not that, the only two options I know of are wheel bearings and diff. I have rebuild posi-diffs but it has been 30 years since my last one and I no longer have access to the tools

Who is the best to do rebuild service on diff or rear wheel bearings?
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Old Jun 4, 2010 | 05:29 PM
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"If" you have rallys remove the outer trim rings and try it.
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Old Jun 4, 2010 | 10:40 PM
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no, got aftermarket alum wheels

Originally Posted by ...Roger...
"If" you have rallys remove the outer trim rings and try it.
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Old Jun 5, 2010 | 05:36 PM
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I noise when braking or just off the throttle? What work has been done lately? Rotors that are machined too coarse will cause a click sound as they will pull or push the pads in their calipers, the noise repeats as the pads return to their original position and repeat the process.
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Old Jun 5, 2010 | 10:13 PM
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braking has no effect on noise, but it is louder when slowing down than speeding up. Calipers rebuilt, new pads, new u-joints in half shafts, oil changed in rear end. Noise changes with speed. Slow clack at slow speed, fast at quicker speeds.

Originally Posted by centralcalvette
I noise when braking or just off the throttle? What work has been done lately? Rotors that are machined too coarse will cause a click sound as they will pull or push the pads in their calipers, the noise repeats as the pads return to their original position and repeat the process.
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Old Jun 8, 2010 | 10:35 PM
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Default miss spoke

will I miss spoke. The front calipers were re-done not the rear. The pads are at about 50%. changing the drive shaft u-joints did not stop the noise. Moving the wheel back and forth did make a click noise. Feeling around led me the the brake pads. THey made a clack noise when the wheel reversed direction.

I noticed these rear pads did not have the metal plates cliped to the back side as the front do. Could this be the source. New pads would be a lot cheeper than wheel bearings and diff rebuild.
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