Where is the engine temperature sensor on a 1999 3.8 liter mustang?

On a 1999 Ford Mustang with a 3.8-liter engine, the engine temperature sensor, also known as the coolant temperature sensor, is located on the engine block, near the thermostat housing. It is typically found on the driver's side, towards the rear of the engine. You may need to remove some components for easier access. Always ensure the engine is cool before attempting to locate or replace the sensor.