Removal Procedure
- Disconnect the negative battery cable.
- Remove the engine cover. Refer to Engine Cover Replacement in Interior Trim.
- Remove the air inlet tube wingnut.
- Remove the air inlet tube.
- Disconnect the IAC valve harness connector.
- Remove the IAC mounting bolts.
- Remove the IAC valve and O-ring from the throttle body assembly.
Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.
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.
Cleaning and Inspection Procedure
- Clean the IAC valve O-ring sealing surface, pantie valve seat, and air passage.
- Replace the IAC valve O-ring if it is distorted, cracked, or cut.
| • | Remove excess carbon deposits with a small amount of carburetor cleaner on a parts cleaning brush. Follow any instructions on the cleaner container regarding cleaner usage. |
| • | Do not use a solvent containing an extremely powerful solvent such as methyl ethyl ketone. |
| • | Shiny spots on the pintle and seat do not represent a bent or misaligned pintle shaft. |
| • | If heavy deposits are present in the air passage, then remove the throttle body for a complete cleaning. Refer to Throttle Body Assembly Replacement . |
Installation Procedure
- Replace the IAC valve O-ring if it is distorted, cracked, or cut.
- Measure the distance between the IAC valve pintle and mounting flange. Use finger pressure to slowly retract the pintle if the distance is more than 28 mm.
- Lubricate the IAC valve O-ring with clean engine oil.
- Align the flange holes with the mounting holes on the throttle body assembly.
- Insert the IAC valve through the O-ring into the throttle body assembly.
- Install the IAC valve mounting bolts.
- Connect the IAC valve harness connector.
- Install the air inlet tube.
- Install the air inlet tube wingnut.
- Install the engine cover. Refer to Engine Cover Replacement in Interior Trim.
- Connect the negative battery cable.
- Perform the IAC reset procedure.
Important: Use an identical part when installing a new IAC valve. The IAC valve pintle shape and dimensions are designed for specific applications.
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.
Tighten
Tighten the bolts to 3 N·m (26 lb in).
IAC Valve Reset Procedure
- Turn ON the ignition for 20 seconds.
- Turn OFF the ignition for 10 seconds.
- Start the engine.
- Check for the proper idle speed.
