my 03 p.t cruiser has been rigged somehow so that the cooling fan turns off when the engine does. Before, the fan would not turn off and would wear out the battery. The mechanic told me to be sure and add coolant daily to prevent overheating. It has become a pain to do this. I put a new thermostat in, checked the overflow tank, checked for leaks and the hoses. I'm thinking of adding a can of the head gasket fluid to seal any holes that i cannot see. Help please!

The engine cooling fan is designed to turn off with the engine. Or it certainly would run the battery down. If a fan kept running, it would be a stuck fan relay. Okay. Adding coolant everyday must mean a leak that needs fixed. If you can not find the leak, it may be the head gasket. Not sure those sealants really work. Time to trade.

Thank-you. I had Auto Zone test it but head gasket didn't come up, just spark plugs so I changed them. I also replaced radiator cap. I desperately want to be free of it, but who would want it?

I had the same problem. It was the fan relays that caused the problem. They are not expensive at all, and on my 07 they are almost easily accessible.