[wiswind]

I do check in.....but only post if I feel I can add something of value.....so often the advice already given is as good as or better than anything I can say.....or, as with many of the new posts I read today......I have no clue on what to offer.

I would look around, as you already are doing, for some vaccum leak.
Definition of vaccum leak (as you already know) is air entering the intake at ANY point past the MAF (Mass Air Flow sensor).
I don't know if the isolator bolt issue would STILL be present on the 2003......I would have hoped that FORD would have put the improved ones in by then.

Of course, you could have some other issue, dirty MAF, dirty fuel injector....but the line of attack of starting with the vacuum leak possibility is what I would recommend.