Need Help with High Idle 2002 Expd.

[toddot]

Please help!! I have a 2002 Expedition with 116,000 miles. It will occassionally idle up around 2500 to 3000 rpm while driving or in park. I changed the IAC and it seemed to help for a week, but now it is back. Sometimes you can push down on the gas pedal and it will drop down to normal. Has anyone experienced this? and if so where do I start.

Thanks Todd

 

[green03]

make sure your throttle body isn't sticking open....
Large vacuum leaks can cause this as well but it would usually run rough at first when the vacuum leak appears.
Matt R

 

[toddot]

Thanks Matt, I am somewhat mechanically inclined, is the throttle body a difficult thing to take apart and clean? It has never ran rough when it is doing this, just really high rpms.

 

[toddot]

Cleaned the throttle body on Monday, so far so good. But it has done this before. Hopefully I got it.