Idling really high

[ncjmj]

The past couple of weeks, my car's been idling about 1500-2000 rpm and it's set to 800. The guy that tuned my car adjusted the IAC Duty Cycle and I'm wondering if I should try adjusting that some more. It started acting up a few days before my radiator finally gave up the ghost after 17 years and I replaced it the same day, but I'm wondering if maybe it has something to do with that, because this car had a bad water pump at one time and that affected the idle this same way. But after the car sits at idle for a couple minutes, it usually goes back to normal, so I'm not sure what the center of the problem is.

Any and all input is greatly appreciated, thanks!

[Spunkster]

Try cleaning the idle valve, make sure the coolant is bled and that there are no leaks in the throttle body.

[ncjmj]

I'll try that. thanks!