my car is not working. it's a 92 Grand Prix with about 130,000 miles. we can get it to start, but it will shut off about 3 seconds later. we've replaced the fuel filter, and ignition coil. next we're doing the spark plugs. i got an oil change about a month before it quit. does anyone have any ideas what it might be? i know a while before it died it would shut off if it idled for a bit. any suggestions would be great! i don't know much about cars so any info i could get would be very much appreciated!