winterset Posted June 14, 2015 Report Share Posted June 14, 2015 Most important is to make sure the thermostat is not installed backwards. The little hole with the weight is to prevent a steam pocket from forming next to the thermostat. Steam rises, so that hole should be at the TOP. It is said that if the thermostat is installed with the vent valve at the bottom, it can cause a car to overheat under certain conditions. Link to comment Share on other sites More sharing options...
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