1997 Geo Prizm Brakes " Knocking " after replacem

1997 GEO PRIZM
147,000 MILES • 4 CYL • FWD • AUTOMATIC
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JUSTNAKENNY
  • MEMBER
  • 6 POSTS
I just had my rear brake drums and shoes replaced and now I have a loud " Knock," so loud that people that I'm driving past can hear if they're listening for it, and the mechanic that did my brakes can't duplicate it, by just spinning the rear wheels by hand. It only " Knocks " when the brakes are applied, both the handbrake and the peddle. The lug bolt holes are slightly bigger on one of the drums, so when you rock the drum back and forth, with the tire off and the lug nuts not tightened, you can hear a little click and it touches one side and then the other. He's replaced that one 3 times that I know of and it didn't help. It sounds like it " Knocks " with every revolution of the wheel when I'm driving, but only when the brakes are applied.

Please help me.

Thank you.
Mar 16, 2010 at 7:43 PM
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MMPRINCE4000
  • ✓ASE Certified Mechanic
  • 8,548 POSTS
  • ASE Certified Mechanic
Either the drums are out of round or the shoes are too tight.
Mar 26, 2010 at 7:39 AM
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