I'd give it a shot but my answer would be exactly the same. What else do you think brake pedal pulsations come from, the wipers? Being a brake expert, I notice every little detail about my minivan, and mine went from a perfectly smooth pedal to a pulsation so horrendous I can hardly stand to drive it, in less than two weeks. My brakes are about 8 years old but that warpage didn't show up for almost that long.
If you want technical, have the rotors checked for lateral runout. You may have a caliper sliding back and forth setting up the rotational noise you're hearing. Have them checked for thickness variation. That will cause the pedal to pulse up and down. Have the back side checked for the development of huge rust spots. They can make noise with or without pedal pulsations. Why expect PROTECH1980 to know what's wrong over a computer? If you want some obscure technical answer you gotta provide more details other than the standard, common symptoms you listed. Sheesh! Anyone with the least bit of courtesy would simply say, "I think it's something else. What other things can I check?" Many problems take many replies with lots of questions and suggestions before we arrive at a solution. Most of the experts will stick with you until the problem is resolved, ... If you treat us with the tiniest amount of respect.
Turn off your capital locks, and lets try to solve the problem regardless HOW many replies it takes. And don't expect us to be psychic. We're really not that good. You are to blame if you don't like the answer because you didn't provide any information that would lead any normal person to think it's anything other than a warped rotor. Give us details if this is no ordinary problem.
Friday, July 15th, 2011 AT 4:53 AM