WARNING: DO NOT SMOKE OR CARRY LIGHTED TOBACCO OR OPEN FLAME OF ANY TYPE WHEN WORKING ON OR NEAR ANY FUEL RELATED COMPONENT. HIGHLY FLAMMABLE MIXTURES ARE ALWAYS PRESENT AND MAY BE IGNITED, RESULTING IN POSSIBLE PERSONAL INJURY.

Idle Air Control (IAC) Valve

Tools Required:

• Rotunda Injector Tester/Cleaner 113-00001
• Rotunda Air Bypass Actuator 113-00009

Preferred Cleaning Procedure

 CAUTION: Do not clean black plastic idle air control (IAC) (9F715) valves. Use only specified cleaner. Do not spray directly on throttle plate or use any type of scrubbing method. Do not run engines of vehicles with air flow meters during cleaning.

1. Ensure idle air control actuator is operating properly. Refer to Powertrain Control/Emissions Diagnosis Manual.

2. Remove throttle inlet air tube.

3. Disconnect idle air control valve connector.

4. Connect Rotunda Idle Air Control Actuator 113-00009 and Injector Tester/Cleaner 113-00001 or equivalent.

5. Start the actuator. Do not start engines of vehicles equipped with air flow meters.

6. Spray Carburetor Tune-Up Cleaner D9AZ-19579-AA (ESR-M14P9-A) or equivalent into air bypass valve passage for five seconds while actuator is operating.

7. Turn off the actuator. Allow solvent to soak for 15 minutes.

8. Turn on actuator. Do not start engines on vehicles equipped with an air flow meter.

9. On vehicles with air flow meters, spray carburetor cleaner into idle air control passage for no more than six seconds.

10. Turn off actuator and stop engine if running.

11. Install intake air tube. Start actuator and engine and run engine for one minute.

12. Disconnect actuator from idle air control valve. Connect idle air control valve electrical connector.

13. Start engine and check for normal proper operation.

Alternate Cleaning Method

NOTE: This method is to be used only when tools for the recommended methods are not available.

Remove the idle air control valve from the vehicle. Remove the electrical solenoid assembly from the mechanical portion of the idle air control valve by removing the two screws, then sliding the mechanical portion away from the solenoid.

Soak the mechanical portion in Carburetor Tune-Up Cleaner D9AZ-19579-BA (ESR-M14P9-A) or equivalent, for two to three minutes maximum.

 CAUTION: Do not exceed three minutes soak time, and do not use choke cleaner, as an internal O-ring may begin to deteriorate.

With the mechanical portion completely submerged, shake in all directions: up, down, right, and left. Then push in on the rod that mates with the solenoid assembly, and again shake in all directions with the unit submerged and the rod held in as far as possible.

Remove the unit from the cleaning fluid and dry out thoroughly using compressed air. Assemble and install the idle air control valve and set idle to specification, if necessary. Refer to the Powertrain Control/Emissions Diagnosis Manual.