How do you replace thermostat on 94 Dodge Intrepid?

To replace the thermostat on a 1994 Dodge Intrepid, first ensure the engine is cool and disconnect the negative battery cable. Drain the coolant from the radiator, then remove the upper radiator hose connected to the thermostat housing. Unbolt the thermostat housing, take out the old thermostat, and clean the mating surfaces before installing the new thermostat with the spring side facing down. Reassemble the housing, reconnect the hose, refill the coolant, and check for leaks.