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fastasleep
06-30-2007, 11:33 AM
Ok, I had a torn passenger front CV boot. I replaced the entire axle. Everything looks good.

I go to test drive the car and all seems fine, right up until I bring the car to a complete stop. I get this noise/vibration in the brake pedal just before coming to a complete stop, combined with a slight studdering/jerking of the car.

I know that it's a problem with the front brakes because I can e-brake the car to a stop and it never does it. I don't get this noise/vibration at any other time during the braking process - only right before the car comes to a hault; which, is why I don't think it's a warped rotor or pad not seating correctly. I would think if it were either of those issues, that I would feel it throughout the time that the car is braking; as opposed to this noise/feeling that comes on like a light switch just before I stop.

I went to test drive it again today, and was able to determine that the sound is identical to the sound that you hear after just starting the car, where a relay or something clicks and you can feel your brakes become 'power' brakes. This sound is the same sound that I get before coming to a complete stop, only accompanied by a jerking of the car and grinding/vibrating feeling in the brake pedal.

Thoughts?




fastasleep
06-30-2007, 04:49 PM
I just uninstalled and reinstalled the new axle without discovering anything strange. Everything went very smoothly, yet the problem remains.

Basically, I think I can accurately describe it as: power braking becoming intermittent just before coming to a complete stop.

What would cause this sporadic loss of power braking under conditions just prior to stopping?