I know I'm new and I've already asked another question, so I'm sorry for all of these. We recently picked up a 2001 IS300. We were told at purchase that it needed brakes and on initial drive it did appear based on the grinding sound. After a 6hour trip home I pulled the wheels off.
Rear pads and rotors (both sides)
Front pads and rotors (both sides)
I did notice when pulling them apart that the driver side slide pin (lower) was stuck. This was causing an obvious abnormal wear on the pads, and causing the caliper to sit crooked. So I removed the bracket and using an air hammer, I finally got the seized pin out. I cleaned out the slide hole and pin, re-greased, cleaned the boot and inspected it. After re-assembly both pins appeared to be working PERFECTLY. When compressing the caliper it was a little more resistant than I had expected compared to the pass. side.
So I finally got everything back together and drove the car around. The grinding noise is still there. It only happens when you are above 25mph and doesn't do it when on jacks. I'm going to check the wheel bearing this weekend (jack it up and wiggle the wheel). I'm thinking possible bad caliper, bad wheel bearing, bad ball joint.
Its NOT causing the car to pull to either side, no brake pedal issues at all, nothing but that noise. It doesn't bother my wife (its her car) but it drives me up the wall...
Any suggestions guys/gals? I'll be more patient this time around