The thermastat is sticking. Staying closed then all of a sudden opening. As I would say to mostly everybody, before the
weather gets really cold. Tke the therrmsatat out have the system flushed install new thermastat and anti freeze. Over the years the thermastat starts to go bad. Sometimes the old coolant can also clog the radiator making the system overheat.
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Tuesday, December 7th, 2010 AT 5:06 PM