when my 88 4runner gets warmed up, it begins to emit this squealing sound, i already pulled both front and back tires, and both front break pads are good, but one had that little wire gauge thing tangled in the wheel so i thought that was it, but after removing it, nothing changed. so i moved on the rear wheels, but drum breaks were too tight to remove the cover thing. Sigh. 5 and a half hour later i got the cover off, and loosened the breaks, but still i have a squeak, it only happed when i am not pressing down on the break, and i cannot tell where it is coming from. Please help me. i am going crazy. And my radio is having a hard time over powering the squeaky noise ;)

By the way the rear drum breaks also had like 80% of the pad left.