Ok,
1995 GT 5.0, 163k miles, 5 speed, my dad's. A couple of weeks ago he called me and said he heard a "pop" and now she sounds like a foghorn and idles at 2k. Did some research, indicated a bad IAC. We replaced it and the foghorn noise has gone away, but she still idles at 1500. He searched some Mustang forums and found the usual suspects; disconnect the battery, etc. We did that, no CEL.Before we start messing with the idle adjustment screw, any ideas?
Steve in AZ