Where is the thermostat on a 1997 Isuzu trooper?

On a 1997 Isuzu Trooper, the thermostat is located in the engine compartment, typically mounted on the engine block near the water pump. To access it, you usually need to remove the upper radiator hose, which connects to the thermostat housing. Once the hose is removed, you can unbolt the thermostat housing to replace the thermostat itself. Always ensure the engine is cool before attempting this procedure.