I have a friend with a '94 z28 that won't turn over. The starter is good, and if the starter is jumped, the car will start and then die after a few seconds. Is this an anti-theft problem, or an ignition switch? Any opinions or advice for bypassing stuff will be greatly appreciated, Thanks

 

I could be wrong but maybe the neutral safety switch if its a auto. if its a standard then maybe the switch for the clutch.