Whenever I turn on the a/c, turn the temperature selector switch to blue and/ or run outside air while the temperature control switch is in blue, the engine starts to get hotter and the temperature gauge will steadily increase to hot from being in the middle.
Whenever I turn on the heater or keep the temperature control knob in the red without running the heater, the cooling system functions normally.
I've tried replacing thermostats, bleeding air from the cooling system, replacing the radiator and radiator fan. The condenser fan comes on when I turn on the a/c. I noticed when I was bleeding air from the cooling system, that when I turned on the a/c or turned the temperature control knob to blue, the coolant rushed to the front (radiator filler neck) and continously bubbled out - it was as if vacuum was pulling the coolant to the front, away from the engine. When I turned the a/c off and put the temperature control knob in the red, it bubbled normally letting out the air pockets.
What could be potential problems? Could it be a mismatched hose/s? Bad sensors or relays? Some other electrical issue? Any help would be appreciated. Thanks!
have the same problem?
Saturday, August 7th, 2010 AT 11:37 PM