Where is thermostat for 1998 fiesta?

In the 1998 Ford Fiesta, the thermostat is typically located near the engine block, at the junction of the upper radiator hose and the engine. To access it, you usually need to remove the upper radiator hose and possibly other components, depending on the specific engine configuration. It's a good idea to consult the vehicle's service manual for detailed instructions on locating and replacing the thermostat.