Idle Control Valve adjustment
 

Dave Petryk described a procedure that uses a screw to adjust the idle speed produced by the idle control valve in the following thread:

http://www.peachparts.com/shopforum/sl-forum/243090-idle-speed-air-control-slide-valve-confidence-check-2.html

I was going to try this to reduce my high idle, since I've tried everything else, including changing the ICU, checking for vacuum leaks, adjusting the linkage, etc.


However, I assumed that the rubber ring this screw goes into was empty and threaded, but it isn't. The ring has a little brass cap in it. So, before I ruin my ICV, I was wondering if you change the idle by using this screw to push the brass cap down?

Thanks very much for any help anyone can give me on this procedure.

What year/model is your car?

It's an 81 380sl. So I reposted my question and the thread in the SL Forum, where Dave Petryk responded.