yes, the stearing stops, close the switch and idle goes to 1000 , flare, and is only for preventing stalls, in extreme conditions, like stuck in a snow bank, mud,etc.
im sure you know that.
if all that is ok, and seems so then its a small air leak. or ISC fails to close 100% most dont, after all this time,
the ISC piston is a can and seats in a rubber base ring, most rings are chopped up and ugly.
my naked ISC see seat on right , rubber ring hard to see.
i had to add more spring bias on mine to get it to close better, (factory adjustment, but can be tweaked)
im sure you know that.
if all that is ok, and seems so then its a small air leak. or ISC fails to close 100% most dont, after all this time,
the ISC piston is a can and seats in a rubber base ring, most rings are chopped up and ugly.
my naked ISC see seat on right , rubber ring hard to see.
i had to add more spring bias on mine to get it to close better, (factory adjustment, but can be tweaked)
![[Image: IAC-exploded2w.jpg]](http://www.fixkick.com/sensors/tests/IAC-exploded2w.jpg)
http://www.fixkick.com