I just experienced this again!
i know its not iacv, i cleaned that up really good + replaced gasket about 5k ago
Hot as balls outside, sitting in a drive thru. Idle slowly started to climb. I turned off the car for a minute and fired it back up- issue came right back. Drove about 1 mile down the street and the idle fixed itself almost immediately at the first light. I dont care if i have to rip out the CC cable, I don't use cruise control anyhow. Can anyone confirm this is a sure fix?