but dont you think his mechanic would hve figured out that easy solution.....? he deals with rotors and pads and sticking calipers pulsating pedals all day long. what he doesnt deal with all day long is master cylinders...pro valves...boosters ...pedal switches. i dont know how good this mechaic is but a glazed rotor and pads are easy to identify. also if the pads get extremly hot like he says, he would be complaining of a mushy soft pedal, and he isnt. i really wnat to figure this question out for him and have done some research. go to http://auto.howstuffworks.com/disc-brake.htm and at the end of the explanation of brakes there are a couple of links that might help you. good luck and please keep us all informed....im scratching my head.