Bought a high mileage 99 f150 4x4 yesterday. In the process of cleaning her up, the water hose hit the disc brakes on the drivers side and it was hotter than a BBQ grill! Ok, immediately I thought this isn't good. Jacked her up and pulled the caliper. Pads were almost gone so replaced them with a new set, went for a drive. Now the damn things were smoking so bad I thought they were gonna catch fire! Sticky caliper , right? Stopped and got one then realized that the passenger side started doing it too. Damn! Another trip for the other caliper and new pads because these were toast. I mean just burnt to hell. Before I started working on the truck again, I checked on here and I'll be darned if I didn't find out that the old brake hoses might be acting like a check valve because of rust and deterioration. Got a set of brakes hoses too. Put everything on this morning and works like a charm. Just wanted to say thanks to everyone who has taken the time to write about this problem.
Just wanted to add that even with the drivers side draggin like crazy, the truck didn't seem to pull to one side at all. Been happening for a while too because the pads were far more worn on that side.