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Hi all,
I have a brake issue that seems like pad knock-off to me, but there are no other indications of a warped rotor so I was wondering what else could cause this symptom.
What I'm getting is a low brake pedal when coming to a stop. Brakes are still strong and pedal feel is quite firm. A second "pump" brings the pedal back up high. I don't think it's a master cylinder issue as I can sit there and hold the pedal down hard and it doesn't move towards the floor. Stays nice and solid. Also, when the car is stationary, I can't reproduce the problem. That is, I suppose if I coasted to a stop then applied the brake, it would still be low. But if I come to a stop with the brake, sit there with the brake off and then apply it again it's nice and high.
So it seems like it could be that the pads are getting knocked back by the rotor. But I don't get any sort of shuddering coming to a stop from high speeds (any speed for that matter) and the symptom will show itself even if I drive a short distance at slow speed - when I've experienced knock-off and had it described to me it's always at the end of a long, fast straight that you have an issue.
I suppose I should take a dial indicator to the rotors and check their run-out, but can anyone think of other issues that might cause a similar symptom?
Thanks,
Chris
I have a brake issue that seems like pad knock-off to me, but there are no other indications of a warped rotor so I was wondering what else could cause this symptom.
What I'm getting is a low brake pedal when coming to a stop. Brakes are still strong and pedal feel is quite firm. A second "pump" brings the pedal back up high. I don't think it's a master cylinder issue as I can sit there and hold the pedal down hard and it doesn't move towards the floor. Stays nice and solid. Also, when the car is stationary, I can't reproduce the problem. That is, I suppose if I coasted to a stop then applied the brake, it would still be low. But if I come to a stop with the brake, sit there with the brake off and then apply it again it's nice and high.
So it seems like it could be that the pads are getting knocked back by the rotor. But I don't get any sort of shuddering coming to a stop from high speeds (any speed for that matter) and the symptom will show itself even if I drive a short distance at slow speed - when I've experienced knock-off and had it described to me it's always at the end of a long, fast straight that you have an issue.
I suppose I should take a dial indicator to the rotors and check their run-out, but can anyone think of other issues that might cause a similar symptom?
Thanks,
Chris