Jan 052017
 

1992 Ford Crown VictoriaIdle is up and down. Car stalling when not giving it gas and stalls when at stop signs/lights.


RESPONSE

Stalling with Idle Up and Down

This is an indication of an IAC(Idle Air Control) valve sticking or a vacuum leak. If there is a vacuum leak the IAC will still try to hunt for the correct idle speed but has difficulty. The difficulty if from the vacuum leak. The most common place for a vacuum leak on your engine would be the PCV valve hose. Listen for a slight whistle noise.

 Leave a Reply