Yes the fans run with and without the AC on. They come on and go off as they should. I have replaced the radiator cap, thermostat, Flushed replaced the water pump. I have over heated But if the Head Casket was leaking would I not over heat no matter what the air temp is. No problem this last Fall or Winter.
This morning I drove to work 7 miles it did not get over 1/2 on the gauge Air Temp 72 degree's no AC on. Yesterday drove 7 miles with the AC on Air temp 85 degree's and I over heated.
Going home from work to night 62 degrees air temp I drove 5 miles with the temp gage at 1/2 I turned on the AC and 5 more mile then the gage started to rise to 3/4 and the car started missing more. It also seem to miss more with the AC running than not. Turned off the AC and the temp gage held at 3/4 for 2 miles. At home I sat at idle turned on the Heater and the temp gage dropped to 1/2.
Monday, April 27th, 2009 AT 4:44 PM