Is the thermostat on the upper or lower hose?
Is the thermostat on the upper or lower hose? A conventional thermostat is a simple temperature-controlled two-way valve that opens at a specified temperature. In most cars, a thermostat is installed on the engine and is connected to the upper or lower radiator hose. What happens when the thermostat is stuck on low? Low-Temperature Reading and Underheated Engine A thermostat stuck in the open position constantly pushes coolant into the engine and causes a lower operating temperature. Your temperature gauge will show a needle that barely increases or remains at the lowest setting. Why does the thermostat start at a...