Quote:
Originally Posted by mpofpa
I replaced the thermostat and found that one of the previous owners had placed a gutted thermostat in there, no valve, just a shell. I guess they were having overheating issues as well. Thanks
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Gutting the thermostat certainly worsened the problem, if not causing it in the first place. With no thermostat the water pump can't create any pressure, which is necessary for total and balanced cooling. This is a good way to warp a head, especially if it's aluminum. It's good you replaced the thermostat, but I would keep an eye on the cylinder head gasket for possible leaks.