Contour Enthusiasts Group Archives Forums Modifications Zetec Maintenance Strange idle

Car runs fine, while it's getting gas... If I park the car or come to a stop light or whatever, the car will sometimes start surging. It's not radical but it almost seems like the car starts to miss a little and then evens itself back out but starts missing again a second or two later and continues doing so until I either start going again or just tap the gas a little. Any idea what it might be? I know its got a brand new MAF on it and I don't have any other kind of idea that could be causing a problem like that.