Contour Enthusiasts Group Archives Forums Modifications 3.0L Duratec why no moosing with 3L?

The 3L pulls a tad more air at idle and that does change the idle position as PA stated.
However, I never had moosing period UNTIL my IAC valve was replaced with a stock duratech V6 valve. They have different part numbers, so I traced it back to the dealer where they installed the wrong one. They ordered the correct valve and from then on it was like normal. Still is.

If its an SVT it probably won't come back. IF its an SE, don't worry unless it does come back, then change IAC to the SVT version of it.