braking pulse.

Dreydubs · Post by **Dreydubs** » 13 Dec 2007, 22:07

When Im braking hard, I can feel a pulsing feel in my brakes. Whats wrong?

bekko · Post by **bekko** » 13 Dec 2007, 23:41

might just be your Antilock Braking System kicking in.

-steve

Post by **Ozark Lee** » 14 Dec 2007, 06:16

If the pulsing is very fast then it is the ABS. If it is a slower pulse that corresponds to each revolution of the tires then you have warped brake rotors.

...Lee

Post by **JRL** » 14 Dec 2007, 06:53

You need new rotors

chuckcintron · Post by **chuckcintron** » 14 Dec 2007, 10:30

Besides rotors, anything that introduces play in the suspension can contribute to this. I had perfectly fine rotors, but had a nasty pulsation due to a broken spring seat.

Any of that stuff at the top side of the strut, as well as a (badly) worn wheel bearing can introduce a pulsation when braking.

-Chuck

Tsquared · Post by **Tsquared** » 14 Dec 2007, 12:55

Also realize that if the ABS sensor loads up with metal filings it will give a false positive and set off the ABS pump. This vibration/pulsation occurs only at low speeds and can be rectified by cleaning the sensor.