Where is the thermostat located on a 1992 Ford Aerostar van?

In a 1992 Ford Aerostar van, the thermostat is located in the engine compartment, specifically at the engine end of the upper radiator hose. To access it, you'll need to remove the upper radiator hose and the thermostat housing, which is typically secured by bolts. Make sure to allow the engine to cool before attempting to replace the thermostat to avoid burns from hot coolant.