Joe, You got me worried about my car now. When I have the a/c switched off on my car, the fans only turn on when the thermostat tells it to. The fans turn on when the needle is just above the center notch (220 degrees.) When I am running the a/c, the fans come on with the compressor, so the engine runs cooler. In this case the guage reads midway between the 220 notch and the one below it. Is this a problem? Walt