Is there an abs light on? If so it will need to be scanned, in order to find out. If I were to take an educated guess, I would suspect. That is the abs pulsing so that it doesnt skid, it pulsates so fast, gripping the rotor then letting go thousands of times during an immediate stop, so that it wont skid or lock up, it will never stop on a dime when using abs, because that can potentially cause a skid.
March, 2, 2010 AT 4:47 PM
It doesn't make the grinding sound of ABS. No ABS light. Just at highways speed the brakes work poorly.
March, 2, 2010 AT 7:49 PM
Then you may have some air in the system and will need bleeding