I had a dodgy
IAC valve replaced and the car started moosing horribly.
At 100 Kph it was just like a foghorn continuously blowing.
I found a fix on the web and it worked perfectly, even if was for throttle hang.
Check it out.
http://www.contour.org/ceg-vb/showth...ottle-Hang-Fix
BTW I used a 20mm end cap with a 6mm hole.
Cheers
Todd