I recently replaced the thermostat and new antifreeze. The top side of the radiator (upper hose area) is very hot, the opposite side (lower hose) is cold. Truck is not overheating, it has great heat, I would sweat to death if I left it on too long. 2003 Ford Ranger 4 Cyl 2.3
Read more: My upper radiator hose is hot and the bottom one is cold, is this a problem?
