Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!
I have a 1986 bronco 2 with a 2.9 the bronco high idles constantly no matter if I unplug the IACV or not. Also it runs so rich when you snap the throttle it bogs and black smoke comes out the tell pipe any form of direction would help greatly