Idle Air Control Valve IACV / Speed Motor BUICK CHEVROLET OLDSMOBILE PONTIAC 17076320 17112479 17112649 21813 AC116 AC27

Reference OE/OEM

Number:

For BUICK, For CHEVROLET, For OLDSMOBILE, For PONTIAC

1. Remove the throttle body. Refer to Fuel System for instructions.

2. Remove the stepper motor.

3. Fasten the test harness to the idle air control motor harness connector.

4. Connect the positive (+) terminal of a power source (approximately 6 V) to the white or the green clip.

5. While holding the idle air control motor as shown in the illustration, connect a negative (-) power source terminal to each clip in the following sequence, and check whether there is vibration of the stepper motor as a result of activation of the stepper motor.

• Connect the negative (-) power source terminal to the red and black clips.
• Connect the negative (-) power source terminal to the blue and black clips.
• Connect the negative (-) power source terminal to the blue and yellow clips.
• Connect the negative (-) power source terminal to the red and yellow clips.
• Connect the negative (-) power source terminal to the red and black clips.
• Repeat the test in the reverse (e through a) sequence.

     6.  If vibration is felt as a result of this test, the stepper motor can be considered to be normal.

  The location of the idle air control motor-3.0L and 3.5L engines

Test the idle air control motor for vibration when the harness is connected to it-3.0L and 3.5L engines

Use Mitsubishi tool MD998463 to test the idle air control motor-3.0L and 3.5L engines

REMOVAL & INSTALLATION

       To remove the idle air control motor, the throttle body must first be removed from the intake manifold plenum. Once the throttle body has been removed, the stepper motor unbolts from the it. Label any hoses or cables removed and save the bolts and nuts for re-installation. Attach the new stepper motor to the throttle body. Tighten to 8-10 ft. lbs. (12-14 Nm). Install any parts removed for access to the throttle body.