i had ground out my car a friend of mine and myself went to jump start my car touched cables and next thing you know i had to replace ignition switch it started and ran fine for about 15 minutes and i then drove it for about a mile and the car just started to sputer and die then i tryed to restart and it would not start it just started popping from the exhaust like back fire and would not start just keeps turning over its a 93 400sel any help would be appreciated thank you!