1993 Ford Explorer Rough Idle
I have a 1993 Explorer 4-Door 4wd and lately it has poor idle. It idles in between 500-750 RPM. It seems like its missing but no check engine light has come on. In park its alright idling but while in drive or reverse it drops to 500RPM and like its going to stall but it just flutters. Sparkplugs were changed about 20,000 ago with new wires. I don't see or hear a vacuum leak either. Any Ideas would be appreciated