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)
![[Image: IAC-exploded2w.jpg]](http://www.fixkick.com/sensors/tests/IAC-exploded2w.jpg)
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)
http://www.fixkick.com