Hello Delaney
I'm Chris, Thanks for coming to Just Answer, I am going to do my very best to assist you with this concern in a timely matter. If there is any doubt or further explanation needed on my answer, just reply on this thread and I will get back with you. I am here to help you, so I want to make sure your satisfied.
I also feel like this is the idle air control valve if the idle speed is dropping to low when AC is used. It also would not hurt to do a system cleanup shown below.
Auto Service Technician
Specialized Tech. in Transmission, Transfer Case, Driveline, Brakes, Engine, Elect.,and Suspension
My Car also is Idling at a High RMP, when it warms up it increases to about 1700RPM. Is this because of the IAC motor?