Removal Procedure
- Disconnect the electrical connector from the IAC valve.
- Remove the IAC valve
attaching screws.
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.
- Remove the IAC valve assembly.
- Remove the O-ring.
Cleaning and Inspection Procedure
- 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. |
- Inspect the IAC valve O-ring for cuts, cracks, or distortion.
Replace if damaged.
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.
- 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.
Installation Procedure
- Lubricate the IAC valve O-ring with clean engine oil.
- Install the IAC valve assembly.
- Install the attaching
screws.
Tighten
Tighten the IAC valve attaching screws to 3.0 N·m (26 lb in).
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.
- Connect the electrical connector.
- Reset the IAC valve pintle position.
| 5.1. | Turn the ignition switch to the ON position for 5 seconds. |
| 5.2. | Turn the ignition switch to the OFF position for 10 seconds. |
| 5.4. | Check for the proper idle operation. |
