I have been searching all over and cant find a similar problem anyone has had. I quit driving my tbird a while back when my frump pump seal on tranny started to leak. I went to move it from my car port to pasture by my shop and it cranks up just fine no long start or hesitation. After it runs for about 45 seconds it just dies like somebody cut off fuel, now when it dies if you try to crank it, it starts up for about half a sec then dies same thing like its lost fuel. I first thought it was fuel issue but I checked pressure on rail, sits at 36 no leaking down. I popped off ccrm and jumped a wire on relay to fuel pump to make sure it wasnt getting hot and shutting off but same thing. Now what is stumping me is if i let the car sit for for a while it will crank back up and run again for 30-45 seconds. I cant for the life of me find out what would cause it to run longer after sitting, its not near enough time for motor to even get warm so not sure what is going on. Also a note i can have pedal almost floored at 4500 rpm and after 30-45 seconds it will still just die like its lost all gas or like a kill switch is being hit.