Thermostat, Engine Cooling

Temperature Range

When the coolant temperature is below 91°C (195°F), the thermostat valve remains closed. This prevents circulation of the coolant to the radiator and allows the engine to warm up quickly. After the coolant temperature reaches 91°C (195°F), the thermostat valve will open.
Cooling System

Thermostat Full Open Temperature 195 degrees (2.2L), (3.5L), (3.9L)