How do you replace idle air control valve on 1998 ford ranger?

To replace the idle air control (IAC) valve on a 1998 Ford Ranger, first, disconnect the negative battery cable to ensure safety. Locate the IAC valve on the throttle body, then remove the electrical connector and the two screws securing the valve. Carefully pull out the old IAC valve, clean the mounting surface, and insert the new valve, securing it with screws and reconnecting the electrical connector. Finally, reconnect the battery and start the engine to ensure proper operation.