I had an issue this weekend with a non turbo 2003 pt cruiser where it first overheated and the sensor failed. I was thinking of some antifreeze. So I'll add a little more. But after an hour, the antifreeze will begin to gurgle and rise. I've researched extensively on the internet what it could be. Radiator fan, blockage between air conditioning condenser and radiator, thermostat, bubbles in the cooling system, broken hoses, bad or clogged radiator, cylinder head gasket, water pump, but also aβ¦