egine dies
 

90 Aerostar 3.0 cranks but once it warms up the engine dies, but will crank backup right away. Can drive a few miles before it dies again.
Is this a fuel or electric problem?

Fuel pumps could act that way, getting hot after running a couple of minutes and then shutting down. I haven't known any to let you do that for more than a day though. I would suspect a vacume leak or bad sensor causing your problem.