Technical heater blowing hot then cold

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Technical heater blowing hot then cold


New member
Nov 23, 2005

My punto heater is blowing hot, then cold air, and the temperature rises to about half way, when the fan cuts in and lowers it again.

I had the same problem last year, but it was overheating badly and the fan didnt cut in. I had new water pump, new radiator and thermostat which did not solve the problem and it turned out to be head gasket which was replaced. cost a fortune last year.

Now its happening again, but the temp does not go further than halfway. Any ideas anyone?? It cant possibly be the head gasket again 8 months after a new one could it??