Could a bad coil cause this.. In the morning my car starts up fine but if i drive it for awhile meaning over half an hour then let it sit for half an our or so and i go to start it it will first start then start to gag and stutter start ideling rough then it will die then i try to start and have to mess with the gas a little but if it starts then i touch the gas pedal it doesnt seem to help only hurt. Also if i shut if off it will start right back up if i do it right after i shut it off or is this problem just the 02 sensors??

 

I may be out in left field here but I would be concerned more with fuel pressure. If you have the means to check fuel pressure I would look at that first. Also check the integrity of the fpr possibly failing diaphram. Let us know.