Where is the thermostat on a 1993 Mercury sable?

The thermostat on a 1993 Mercury Sable is located in the engine compartment, specifically on the engine block where the upper radiator hose connects to the engine. To access it, you'll need to remove the upper radiator hose and the thermostat housing cover, which is typically held in place by bolts. Make sure to allow the engine to cool before attempting this, as the coolant can be hot.