How do you adjust idle Ford Tempo 89?

To adjust the idle on a 1989 Ford Tempo, first, ensure the engine is at operating temperature. Locate the idle air control (IAC) valve or the throttle stop screw on the throttle body. If you're adjusting the throttle stop screw, turn it clockwise to increase idle speed and counterclockwise to decrease it. After adjustments, recheck the idle speed using a tachometer to ensure it meets the manufacturer's specifications.