Removal
1. Disconnect the "-" wires of the battery.
2. Remove the idle air control valve connector.
3. Remove the IAC valve mounting bolts.
Note: On IAC valves, do not force the valve stem after repair. The force required to move the stem may damage the threads on the worn actuator.
4. Remove the IAC valve.
5. Clean the IAC valve O-ring mounting surface, stem seats and air passages with a suitable fuel system cleaner. Do not use MEK.
Installation Caution: When installing a new IAC valve, ensure that it is replaced with an identical part. The IAC valve stem geometry and diameter are designed for a specific application.
Measure the distance between the IAC valve stem head and the mounting flange. If the distance is more than 28 mm, press the stem with your finger to return the stem back.
The force required to return the stem will not damage the IAC valve. The 28 mm distance was set to prevent the IAC valve stem from coming out of its seat. The 28 mm seat corresponds to the idle control position at startup.
1. Install a new ring on the valve, after lubricating it with oil.
2. Install the IAC valve to the throttle body and tighten the mounting screws to 3 Nm.
4. Connect the IAC valve connector.
5. Connect the "-" wire of the battery.
6. Start the engine and check the idle speed.