Annoying Idle Problem on a 92 GT

Hey, I have a 92 GT and it just started stalling. It runs fine until I stop at a light then it kind of jolts a little bit and stalls. I hope its not a trann problem but when ever Im at a light if I pop it into nuetral I don't have the stalling problem at all. As long as it's in drive and Im stopped my shit justs sputters and then stalls. Im sure this has happened to someone else so help me out.

Thanks guys

I had the exact same problem on my Mercury Tracer LTS. Too fix it I looked my engine over forever. and finally found that there was a crack in my intake house. Give that a look if you still having this problem. All I did to fix it was duct tape it. well atleast till I found an autowreckers, I then just replaced it.
Hope that helps you out!