I have a 98 Toyota Camry that's temperature gage says it's overheating. When I put the heater on the temperature stays the same. When I put the air conditioning on the temperature gage goes back down. It doesn't overheat every time I drive it but does most of the time. I have never fully overheated the temperature gage will just get really high and I have to turn the AC on or stop driving for a few minutes. I have replaced the thermostat, radiator, water pump, and temperature sensor. Could it possibly be something to do with the fans that are mounted on the radiator? These were not replaced I took them off of the old radiator and installed them on the new one. It appears that the fans are not running when the car is running but when I turn on the AC they start up. Is it possible that it is something with the fans? Any help would be much appreciated.
Thanks, Brant