Idle Speed/Throttle Actuator - Electronic: Service and Repair

IAC Thread Mounted 10mm Pintle:

NOTES:
^ The Idle Air Control (IAC) valve is an electrical component and must not be soaked in any liquid cleaner or solvent. Otherwise damage could result.
^ The IAC valve for this application is thread-mounted and has a dual taper, 10 mm diameter, pintle. Any replacement of the IAC valve must have the correct part number, with the appropriate pintle taper and diameter for proper seating of the valve in the throttle body.



REMOVE OR DISCONNECT
1. Disconnect electrical connector.
2. Remove IAC valve, use a 32 mm (1 1/4") wrench.
3. Remove IAC gasket and discard.
4. Clean old gasket material from surface of throttle body assembly to insure seal of new gasket.

CLEAN
^ Both original and replacement IAC valves have a special factory applied thread-locking compound applied to the screw threads. If the valve removed from throttle body is being reinstalled, DO NOT remove thread-locking that may remain on the threads.
^ Clean IAC valve seating surfaces on throttle body to assure proper seal of new gasket and IAC valve.

Idle Air Control Valve Pintle Retraction (Manually):

NOTES:
^ If the IAC valve was removed during service, its operation may be tested electrically with the IAC/ISC Motor Tester (J-37027 or BT-8256K) or equivalent. Before installing a IAC valve, measure the distance between the tip of the valve pintle and the mounting surface. If the dimension is greater than 28.0 mm (1.10 inches), the valve pintle must be retracted to prevent damage to the valve. This may be done electrically using an IAC/ISC Motor Tester or manually by exerting firm pressure, as shown in the illustration, with a slight side to side movement on valve pintle to retract it.
^ No physical adjustment of the IAC valve assembly is required after installation. The IAC valve pintle is reset by turning the ignition ON for ten seconds and then OFF. The ECM then resets the pintle to the correct position. Proper idle regulation should result.

INSTALL OR DISCONNECT
1. Install the IAC valve into throttle body with new gasket.

NOTE: New IAC valves have been reset at the factory and should be installed in the throttle body in an "as is" condition, without any adjustment.

2. Tighten IAC valve assembly to 18.0 Nm (13.0 lb-ft).
3. Reconnect electrical connector to IAC valve.
4. "START" engine and allow it to reach operating temperature.