I am looking at buying a 94 chevy c1500 w/t with the 4.3 vortec in it and it has a stalling problem. The owner said once it gets to operating temp it starts to sputter and it will die. I am wondering what the problem could be and if it is worth buying for $500 and is worth the time and money fixing it. Could it possibly be a crank position sensor because that is what my dad is thinking or any other sensor.