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Car Forum / Driving, Maintenance, Tuning / Maintenance and Repair / December 200786 Caprice Rear Brakes Vibrating/Pulsing
The rear Brakes of my car were pulsing (I have already done a complete front brake job). I changed the drums, but not the shoes as they still look good. I sanded them a bit. With the new drums the brakes went from pulsing to vibrating. Today I jacked the car up and made the hubs spin with the engine. There is little to no side to side movement but definitely a bit of up and down movement on the outside edge of the hubs. There is little play in the bearings. . The vibrating seems to get worse as the car is driven. Do I just need new shoes or could axle runout be an issue? I have worked on these models for 25 years and never encountered this problem... Thanks > The rear Brakes of my car were pulsing (I have already done a complete front > brake job). I changed the drums, but not the shoes as they still look good. [quoted text clipped - 6 lines] > models for 25 years and never encountered this problem... > Thanks How do you know it is the rears?! What do you mean by "pulsing"?! I can tell it<s the rears cause the vibration is felt in my butt, not in the steering at all (front brakes are completely new), the car stops straight too. I cheeped out not changing the rear shoes when I changed the drums. Might be a bad interaction with the old shoes and new drums? >I can tell it<s the rears cause the vibration is felt in my butt, not in >the steering at all (front brakes are completely new), the car stops >straight too. I cheeped out not changing the rear shoes when I changed the >drums. Might be a bad interaction with the old shoes and new drums? Try using the parking brake to slow the car. Do you feel the vibration then? Did you have the new drums turned? They could have been stored/shipped improperly and be out of round. Yes, to be sure I used the parking brake, the problem is in the back. Never thought of having the new drums turned, but that might find/solve the problem. Thanks "> > Try using the parking brake to slow the car. Do you feel the vibration then? > Did you have the new drums turned? They could have been stored/shipped > improperly and be out of round. > I can tell it<s the rears cause the vibration is felt in my butt, not in the > steering at all (front brakes are completely new), the car stops straight > too. I cheeped out not changing the rear shoes when I changed the drums. > Might be a bad interaction with the old shoes and new drums? If the old drums were turned oversize, the old shoes will be worn in to an oversize diameter. They will hit on the edges first. Most noticeable as a "grabbiness". Try new shoes. The old drums were ancient, probably only the second set on the car, so who knows... >> I can tell it<s the rears cause the vibration is felt in my butt, not in >> the steering at all (front brakes are completely new), the car stops [quoted text clipped - 3 lines] > oversize diameter. They will hit on the edges first. Most noticeable as > a "grabbiness". Try new shoes. > The rear Brakes of my car were pulsing (I have already done a complete front > brake job). I changed the drums, but not the shoes as they still look good. [quoted text clipped - 5 lines] > need new shoes or could axle runout be an issue? I have worked on these > models for 25 years and never encountered this problem... I'd first be sure the drums themselves weren't out of round. Chinese?  SignatureDec. 6 (Bloomberg) -- Government officials and activists flying to Bali, Indonesia, for the United Nations meeting on climate change will cause as much pollution as 20,000 cars in a year. They are Monroe, I believe made in the states or Mexico, I though of that too, switched them around this afternoon, the vibration is less but still coming from the driver"s side. I will try new shoes soon, should have done it in the first place. > I'd first be sure the drums themselves weren't out of round. Chinese? |
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