I would risk a guess that your IAC (Idle Air Control) valve is clogged or
otherwise inoperative, and the air supplied through that open port is
keeping your engine idling. IAC failure is very common - use Google to
search posting on this group. Pulling trouble codes out of the computer
might be very helpful to confirm (Autozone and its siblings allegedly do
this for free in most states).
Oh wait a moment, did you say it was a 92? Autozone probably won't, but all
you need to read the codes is a paper clip. This link if for the Bronco, and
the location of the test connectors might be slightly different, but
otherwise still useful:
http://www.off-road.com/ford/bigbron....html#TestPlug

Search google for 'EEC IV codes', and you will find more...