For 1990-2009 cars

### Removal Procedure

1. Remove the idle air control (IAC) valve connector.
2. Remove the IAC valve attaching screws (1).

Notice: If the IAC valve has been in service: DO NOT push or pull on the IAC valve pintle. The force required to move the pintle may damage the threads on the worm drive. Also, DO NOT soak the IAC valve in any liquid cleaner or solvent, as damage may result.

3. Remove the IAC valve assembly (2).

• | Clean the IAC valve O-ring sealing surface, the pintle valve seat, and the air passage.

• | The IAC valve may be cleaned. Use a shop towel or parts cleaning brush to remove any heavy deposits.

• | Any shiny spots on the pintle or seat are normal and do not indicate misalignment or a bent pintle shaft.

• | If the air passage have heavy deposits, remove the throttle body for a complete cleaning.

• | Inspect the IAC valve O-ring for cuts, cracks, or distortion. Replace the O-rings if necessary.

• | When installing a new IAC valve, be sure to replace the valve with an identical part. The IAC valve pintle shape and diameter are designed for a specific application.

### Measurement Procedure

This procedure is only for installing a new IAC valve.

Important: If installing a new IAC valve, replace the IAC valve with an identical part. The IAC valve pintle shape and diameter are designed for the specific application.

Measure the distance between tip of the IAC valve pintle and the mounting flange.

If the distance is more than 28 mm, use finger pressure to slowly retract the pintle. The force required to retract the pintle of a new valve will not cause damage to the valve.

### Installation Procedure

1. Lubricate the IAC valve O-ring (3) with clean engine oil.
2. Install the IAC valve assembly (2).

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

3. Install the IAC valve attaching screws (1).

Tighten
Tighten the screws to 3.0 N·m (27 lb in).

4. Reconnect the IAC connector.
5. Use the following procedure to reset the IAC valve pintle position:

5.1. | Turn on the ignition, leaving the engine off.

5.2. | Turn off the ignition for 10 seconds.

5.3. | Start the engine and verify the correct idle operation.