Periodically over last 6 years I have had problems with rear disc brakes on
95 Taurus GL 4 dr. sedan with extra weight besides one driver. Replaced Emergency Brake cables, Front/Rear proportioning surge valve, both rear calipers with rebuilts twice, burned out pads many times all with no real effect.Replaced rusted rear brake lines and that seems to have cured it for one year then today after a 15 min. drive, I found my left rear caliper overheating again. Other Right rear brake is fine and never had problem with front brakes. The rear caliper overheating only seems to happen in warmer weather.
Any Idea what causes this plaguing rear caliper overheating problem that sometime melts or burns rubber seals?