My DSM is idling too high. Can you help? Options

[JohnnyWadd]

Hey, guys. Ever since I put my car together after the theft, it's been idling too high. I had to put a different throttle body on her, so I figured it was just the BISS. I tried spinning that in, and it didn't help. I bottomed the screw out, and it still idled at around 1900 rpm's. I woulda thought that screwing it all the way in woulda killed it.

Anyway, before I jump into trying to diagnose this problem, I want to get as much background as possible. If I'm going to start searching, I want to search it all. So, I was wondering if you guys could tell me what to check. Can you guys list as many things as possible that control idle speed? That way, when I jump into it, I'll be able to check everything at the same time. I'd rather do it that way than check one thing, quit till later, check another thing, quit till later, and on and on. Ya catch my drift?

Anyway, if you guys can help me create a list of things to check to back my idle down, I'd appreciate it. By the way, I drive a 1991 Talon TSi FWD 2.0L Turbo.

Thanks
Jon

[JohnnyWadd]

I'm convinced that the ISC is the problem. Another guy who contacted me told me that, just for the hell of it, he went out to his car and unplugged the ISC. When he did that, his idle shot up to around 2 grand and sat there. That sounds like exactly what's going on with my car. No power to the ISC. Now I just have to figure out why. The ISC itself is okay. I don't have a voltmeter, so I'll have to find one in order to work on this problem. I'll keep you guys posted.

Thanks for the help.
Jon