Changed out IAC valve today due to a rough idle issue. Now that its changed my evo idles at 2100 rpms at a stop and if I'm rolling and throw it into neutral it hunts for idle. It goes from 1200 up to 2100 until I come to a stop. This is extremely frustrating especially because replacing it was supposed to fix my old idle issue and now its caused another one...

 

you didnt by any chance clean your throttle body out like you said in one of your last threads did you?

 

No I haven't done that yet.