Ok I'm new to this so here it go's. I have a 93 with the 5.2L auto trans. I was driving along and the motor just quit at apx. 70 mph it was low on gas so I put gas in it and still would not start, I went back to pick it up to trailer it home and it started up and I pulled it on to the trailer, it would not again after that. I check for fuel pressure at the fuel rail. I check the fuel pump buy jumping it with a hot wire and it seems fine so I tryed starting it again and it started up but after a min. it die again. smoetimes it will run and sometimes it won't. Do you here any idea of that could be rough.

 

Check for spark when it stalls. If you find no spark, check for voltage at the coil and for a pulsing ground. No pulsing ground would indicate a cam or crank sensor that failed. This can be checked with a test light.

 

sounds like a crank sensor