Kevin,
Do you have a part number on the IAC Valve?
Also...did you reset the computer after installing the IAC Valve?
I'm having a similar situation.....
i put in an optimized tb. it idled sort of high.
it now idles fine when the throttle is left alone.
but when i touch the throttle a bit, it revs up to about 2k rpm and hangs there for a few seconds until going down back to a normal idle (around 800rpm).
i replaced the throttle body gasket (didn't do it when i put the optimized tb in) and did the throttle hang fix. Drives much better as there is no more hang when shifting...but still does the rpm surging.
i'm wondering if the new iac will help me out.
