Idle problem....help!

[LS1Phoenix]

So I get out of work today, get in my car, start it up, and she's barely running. Idling real low bouncing around from like 200-400rpm's. Only does it for a couple seconds and then it normal. Only thing though, it does it every time I stop driving. I'll press the clutch and put it in neutral and it does it again, and will do it everytime. It runs fine, like no throttle bog or anything like that. Anybody have an idea? Need some help quick b/c I'd rather not drive it out to the M&G like this.

[1BADAIR]

engine light?
check the eng sens fuse

[lozanoa11]

iac is my bet clean it out

[Virtue]

x2 on that iac