1999 Grand Marquis LS (~60,000 miles). It does that from time to time, I
have to keep my foot on the gas pedal for a while, otherwise, it *will*
stall. (it doesn't idle)
Happened again yesterday, had to play with both pedals for a couple of
stops & redlights before it could idle on its own. (after about a couple
of minutes, it's fine)
Tried to figure out a pattern (warm then cold, dry than damp, but no match)
The only pattern I can see is I get a little surge of engine power when
it gets OK.
A friend of mine suggested removing the IAC valve, cleaning both
connectors, and cleaning the IAC itself using carb cleaner. Kinda makes
sense to me.
A vaccuum leak would do it more often than once-in-a-couple-weeks,
unless I'm mistaking...
Any ideas/suggestions/insults ?