Brake problem

Asked by Jan 19, 2015 at 03:20 PM about the 2004 Pontiac Grand Prix GTP

Question type: Maintenance & Repair

I recently turned my front rotors and
replaced the pads. Now at high speeds,
when braking, I get a shake in my steering
wheel. At slower speeds a pulsation in my
brake pedal. I know the typical issue is the
rotor but if they've been turned, what could
cause this? There's plenty of fluid and the
lines were bled just to rule out air. Any
ideas?

5 Answers

Maybe you left something loose, did you rotate your tires while at it? Did you go back through after a few miles and retorque the bolts in a star pattern? Did you set the brakes afterwords?

Tires were rotated a few days later by a shop besides having an impact at home so I know they were tight. What do you mean by "set the brakes"?

Brakes are made of glued together bjts. When you put new brakes on, you need to go out and drive about 45 and press somewhat hard on the brakes, do this a few times to get them hot so it bakes the glue and sets them this may or may not be your issue. I doubt this would cause any issues whilst the foot is off the brake.

4,715

Sounds like the rotor machining was not right on at least one wheel. What you are feeling is an uneven or warped rotor.

I did consider taking them back to the shop that did them. Since a machine does it, I didn't figure they could be done incorrectly but I suppose anything is possible.

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