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Old 08-16-2012, 08:15 PM
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Car vibrates when letting off the brake from a stop

I have a 1980 Trans Am that runs really good, it has a posi rear with drums in backs, discs in the front and a th350 Trans. Today I was in traffic when I noticed that when I slowly let off the brakes from a dead stop, I'll get to a point where the car will start to vibrate. It's a vibration through the whole car it seems like. If I let off the brakes completely it goes away and I accelerate fine.

I'm thinking maybe torque converter but I really hope not. I'm hoping for a quick fix like brakes or something. I do get a lot of creaking from the rear drums especially if I drive it after it's say for awhile.

Anyone have any clue what's going on?

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Old 08-16-2012, 08:29 PM
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1. Possibly a warped rotor or bad wheel bearing.
2. Maybe a bad tire too.
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Old 08-16-2012, 08:30 PM
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I'd rebuild the rear drum breaks if you havent already. Even if it doesnt solve the problem it needs to be done. The drums in my 78 failed while i was driving, then the fronts about a year later.
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Old 08-17-2012, 07:17 AM
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Probabaly glazed braking surfaces. If the shoes and pads are still good, remove them all, cut the rotors and drums, use some 60 grit sand paper on the pad/shoe surfaces and reinstall. Use a FLAT surface to cut your pads and shoes. Also, do a quick bedding on the brakes when finished assembling.


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Old 08-17-2012, 08:15 AM
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