This is a front caliper on a 03 Mazda protege. The right brake overheated the other day. I tore it apart and one of the caliper bolts was pretty rusted. I got a new bolt, pads and greased the bolts. Today I was on a short trip on the highway and when I got off I could smell the brake over heating again. I stopped to do some errands and took back roads back home. I didn't notice any brake problems on the way back and the caliper was a normal temp when I got home. I'll probably just replace the caliper but I'm wondering what's going on?
UPDATE: I ended up replacing the whole caliper after it overheated again. The overheating of the RF caliper is gone but I still have a weird intermittent cheep sound coming from either the LF or LR brakes. The sound starts when I press the pedal and goes away as I brake harder. I've also noticed it while turning which makes me think it's related to the hose.