RepairPal puts average US car thermostat replacement cost at $616-$716 before taxes and fees. Your vehicle, thermostat design, labor rate, and coolant service can move the bill substantially. A cheap thermostat insert does not represent...
A thermostat stuck open keeps an engine too cool; a thermostat stuck closed can make it overheat within minutes. A low temperature gauge and weak cabin heat point toward an open valve. A fast-rising gauge, steam, or boiling coolant calls...
