Idle gets stuck

2004 PONTIAC GRAND AM
140,000 MILES • V6 • 2WD • AUTOMATIC
Avatar
123KIMMIE
  • MEMBER
  • 1 POST
Idle gets stuck when starting up the car and won't idle down even with reviving it up. This is intermittent.
Feb 2, 2019 at 7:54 AM
Advertisement
Avatar
ASEMASTER6371
  • CERTIFIED EXPERT
  • 52,796 POSTS
Good afternoon,

The idle air control valve is responsible for controlling the idle.

This valve cannot be cleaned. Only the bore can be cleaned out.

I would also check the throttle body and clean the plate very well of all carbon build up.

https://www.2carpros.com/articles/throttle-actuator-service

Roy

Procedure

IDLE AIR CONTROL (IAC) VALVE REPLACEMENT

REMOVAL PROCEDURE


imageOpen In New TabZoom/Print

1. Remove the throttle control cable bracket from the throttle body.
2. Remove the canister purge valve.
3. Disconnect the idle air control (IAC) electrical connector.


imageOpen In New TabZoom/Print

4. Remove the idle air control valve attaching screws.


imageOpen In New TabZoom/Print

5. Remove the idle air control valve.


imageOpen In New TabZoom/Print

6. Remove the idle air control valve O-ring.

INSTALLATION PROCEDURE

NOTE: The IAC valve may be damaged if installed with the cone (pintle) extended more than 28 mm (1-1/8 in). Measure the distance that the valve is extended before installing a new valve. The distance from the idle air control valve motor housing to the end of the idle air control valve pintle should be less than 28 mm (1-1/8 in). Manually compress the pintle until the extension is less than 28 mm (1-1/8 in).

Feb 2, 2019 at 2:33 PM