IAC Valve Replacement

REMOVAL PROCEDURE





CAUTION: Refer to Battery Disconnect Caution in Service Precautions.

1. Disconnect the negative battery cable.
2. Remove the engine cover.
3. Disconnect the IAC valve harness connector.




4. Remove the IAC valve attaching fasteners.





NOTE: 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.

5. Remove the IAC valve assembly.
6. Remove the O-ring.





CLEANING AND INSPECTION PROCEDURE
1. Clean the IAC valve O-ring sealing surface, the pintle valve seat, and the air passage.
^ Use the carburetor cleaner and a parts cleaning brush in order to remove carbon deposits. Follow instructions on the container.
^ Do not use a cleaner that contains methyl ethyl ketone, an extremely strong solvent and not necessary for this type of deposit.
^ Shiny spots on the pintle or seat are normal. They do not indicate misalignment or a bent pintle shaft.
^ If air passage has heavy deposits, remove the throttle body for a complete cleaning. Refer to Throttle Body Assembly Replacement.

2. Inspect the IAC valve O-ring for cuts, cracks, or distortion. Replace if damaged.

INSTALLATION PROCEDURE

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

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

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




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





NOTE: Refer to Fastener Notice in Service Precautions.

4. Install the attaching fasteners.

Tighten
Tighten the IAC valve attaching fasteners to 3.0 N.m (26 lb in).




5. Connect the IAC valve harness connector.
6. Install the engine cover.
7. Connect the negative battery cable.
8. Reset the IAC valve pintle position.