Originally Posted by Mike1995
Sounds like your IAC(Idle Air Control valve) is sticking/closed too much. Maybe even bad.
Try cleaning the pintle with some carb/choke cleaner. I can't believe we don't have a thread on how to clean it.
But we do have a thread on how to remove it...
Idle Air control (IAC) valve replacement
Mike I have done a few IAC cleaning posts of which I could find this one quickly.
Intake Air Control Cleaning (IAC) On 97 Park Avenue
I should do a proper one for mechanical sticky or something if u like...
Showing more steps like including where I use an old tooth brush etc in process and a more detailed step by step etc...
Would not take me long to add some more pretty pictures with tools being used in removal too, as I am due for another IAC cleaning maybe even next weekend... I can make it so.