[leroge]

Back in November of last year I was experiencing a slow 'pulsing' near the end of the front wheel braking cycle ( as the wheels make their last rotations before the vehicle stops ). One thing led to another and now after $800+ for new disk rotors, pads AND new calipers....the problem appears to be resurfacing AFTER ONLY 9OOO MILES!

Unfortunately, I had two different shops do the prior work ( one the rotors and pads, the other the calipers ). So now the shop that did the calipers says the rotors are 'warped' ( high and low spots )....'they don't make those rotors like they use to!'....and that this is causing the slight 'pulsing' sensation as I near the end of the braking. He showed me several micrometer readings around the outer edge of one rotor disk but the variation wasn't more than 10-15/1000 of an inche or so....but from outer to inner edge the difference was on the order of 20-30/1000 inch. Both rotors were consistently 'worn' showing about the same general thinkness on the order of 1020/1000 of an inch. The pads were about 30% worn.

Noticing that there was a slight and continuous 'rubbing' of the pad on one rotor ( and I didn't sense any high spots as the rotor rotated ) as I manually rotated it - whereas the other rotor rotated freely and I did not sense any high spots on that rotor ( probably because the pad wasn't 'rubbing' ), I questioned whether this might not be a caliper issue. As you might suspect, this possibility was 'out of the question'! As you may further suspect, the problem could be easily resolved by replacing the rotors for a mere $415! And no, these 'bad' rotor disks cannot be 'turned down' because they would then fall below the .963/1000 of an inch spec! Oh yes, I will need new pads!

Something be wrong here, I say. I haven't take the vehicle to the shop that did the rotors and pads yet but I'd bet that shop will be claiming its the calipers!

Surely, I'm gonna be stuck in the middle and I feel someone is crap'n me! Anyone have any suggestions...like the 'gold standard' method of determining the root cause of this persistent problem?

Of note but prbably not related, I get a lot of 'dust' accummulating on front aluminum alloy wheels. Also, the vehicle is a light duty vehicle..never overloaded, mostly highway miles and never any hard braking.

This forum has given me solid and very helpful advice on a number of occasions AND saved me many dollars by showing me how to resolve various mechanical problems on my own.

I would appreciate any assistance you can provide.

HELP!!!!