Idle Speed/Throttle Actuator - Electronic: Service and Repair

Throttle Body Assembly Exploded View:

REMOVAL:
1. Disconnect the IAC valve electrical connector.
2. Remove the IAC valve assembly and gasket, discard gasket.

CAUTION: On IAC valves that have 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.
^ DO NOT soak the IAC valve in any liquid cleaner or solvent, as damage may result.

3. Cleaning and inspection:

^ Both original and replacement IAC valves have a special factory applied thread locking compound applied to the screw threads. If the valve removed from the throttle body is being reinstalled, DO NOT try to remove any of the thread locking compound that may be remaining on the threads.
^ Clean the IAC valve gasket sealing surface, pintle valve seat and air passage:
^ Use carburetor cleaner to remove carbon deposits. DO NOT use a cleaner that contains Methyl Ethyl Ketone. It is an extremely strong solvent, and not necessary for this type of deposit.
^ Shiny spots on the pintle or seat are normal, and do not indicate misalignment or a bent pintle shaft.
^ If the air passage has heavy deposits, remove the throttle body for complete cleaning.

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


INSTALLATION:
1. Install the IAC valve assembly with a new gasket, and tighten to 18 N-m (13 lb.ft), using a socket or box wrench on the valve hex.
2. Connect the electrical connector.
3. Reset the IAC valve pintle position:

a. Depress the accelerator pedal slightly.
b. START and run the engine for five seconds.
c. Turn the ignition OFF for ten seconds.
d. RESTART the engine and check for proper idle operation.