yall probably gettin tired of me but help on this. on an 89 2.8L at what rpm should my car idle at when in park or when stoped at a light or somthing? how do i set it? i just changed the IAC 7 months ago but dont think i did it right. is there somthing that i was suppose to do to make it work right? the idle is kid of high and when i adjust it its to low. could the IAC make your car run lean if not set correct?