DeVille, Eldorado, Seville 1999-2005

Idle Air Control Valve

Print

Removal & Installation



  1. Remove the electrical connector (1) from the IAC valve (4).
  2.  
  3. Remove the IAC valve attaching screws (2) from the idle air control valve (4).
  4.  
  5. Remove the IAC valve from the throttle body.
  6.  
  7. Remove the IAC valve O-ring.

    Click image to see an enlarged view

    Fig. Identifying the components for removing the IAC Valve



    Click image to see an enlarged view

    Fig. Showing the IAC Valve and O-ring



    Click image to see an enlarged view

    Fig. Remove the IAC Valve attaching screws

  8.  

To install:

  1. Install the new IAC valve O-ring.
  2.  
  3. Install the IAC valve (1) into the throttle body.
  4.  
  5. Install the IAC valve attaching screws (2) into the IAC valve. Tighten the IAC valve attaching screws to 3 Nm (27 inch lbs.).
  6.  
  7. Install the electrical connector into the idle air control valve.
  8.  
  9. The powertrain control module (PCM) will reset the idle air control valve whenever the ignition switch is turned ON , then OFF .
  10.  
  11. Turn the ignition switch ON .
  12.  
  13. Turn the ignition switch OFF .
  14.  
  15. Perform the IAC Valve learn procedure.
  16.  

Testing



IAC Valve Learn Procedure
  1. Start and idle the engine for 15 seconds.
  2.  
  3. Turn the ignition switch to the LOCK/OFF position.
  4.  
  5. Wait 15 seconds.
  6.  
  7. Restart the engine, and check for proper idle operation.
  8.  

 
label.common.footer.alt.autozoneLogo