I have a 1994 chevy 1500 pickup - 350 motor that overheats. I've replaced the radiator (was leaking), water pump, thermostat and fan clutch. The motor only overheats after the operating temperature has been reached then you accelerate to 55mph. When the overheating starts the heater starts to blow cool air into the cab. I also replaced the temperature gauge with an after market, to watch the thermostat (180 degree thermostat). What else needs to be replaced?
Tuesday, December 21st, 2010 AT 2:45 PM