Thanks for the help on this. Beings you mention the coolant sensor, I wanted to air that sometimes after driving the car and stop & park. The coolant temperature on switch would be below the middle bar on a hot day. I would get back in it in 3 or 4 minutes & start it up. Then the temperature guage would be a ways above the middle bar & the cooling fans would come on and run till the guage dropped down below the middle bar. I didn't think this way maybe right?