Where is the thermostat located on a Plymouth Sundance?
The thermostat is on the top side of the engine. Follow the hose from the radiator to where it goes connects to the engine. The housing may have the coil bolted on to the outside, depending upon the model. On the top side of the housing is an Allen screw, which should help identify it, plus the temperature sensor is on it as well. The housing must be removed to change out the thermostat. The set screw must also be removed during refilling the system to allow air to escape.