ok here's my problem. it usually only happens once a day and after i get my car started, it's fine for the rest of the day. i have a 98 gt convertable completely stock w/103,XXX miles on it. my problem usually happens when i take my 25 mile drive to work every day. after i let the car sit for about 4 hours or so and go to take my lunch break, i have problems with the car starting. it will crank and start fine but will die shortly after. i can keep it going by keeping my foot slightly on the gas but as soon as i let off it will die. now sometimes it sounds like i can hear something coming from the throttle body kinda like when a carburator backfires or something. i dont know if i have a sensor that's bad, my throttle body is bad or god forbid my fuel pump going bad. anybody have any idea on what's going on?? it only does it once a day and a couple of times at the most. if i let it sit after i try to crank it about 5 seconds, it catches and runs fine. my acceleration is fine so my car is not running sluggish. and i'm also getting about 21-22 mpg and dont really believe it's my fuel pump but i could be wrong. thanks for your info guys!!!