Hi all, I have an 04 GT auto that has developed a really annoying pulsing idle. After coming to a stop the car will idle down every second or so and has even stalled when my wife's been driving it. I've had a tune done by a reputable place, the car has silicon intake and turbo pipes and a new 265lph fuel pump and filter fitted.
I've done the idle learn procedure a couple of times which seems to fix it for a very short while but it always comes back.
Any ideas?