Originally posted by Bradness:
Also, Chris Root advises cleaning the IAC-the Ford manual states that it cannot be cleaned, throw it away and buy a new one. Very interesting.
Funny, I have had the IAC valve start sticking 3 times now, at about 6 month intervals. Cleaning has worked every time. It was the Ford dealer shop manager that suggested I try cleaning it!
The design is a little plastic disk that slides on a shaft. I think the shaft (which sits in the airflow) gets gunked up and it stops sliding smoothly and the spring isn't strong enough to force it closed.
// Chris Root
// '99 SVT
