I have exactly the same problem with my daughter's 1995 Delta 88 LSS and have tried many of the same fixes. From her description (which is rough at best), it acts like it is temporarily starved for fuel. I'm thinking fuel pump? Not sure. This time I think it threw a code, which I need to pull.
Details of the car:
Supercharged 3.8L 67,000 miles
New plugs, wires, harmonic balancer (the rubber dry-rotted). No major repairs otherwise. Problem occurs about once / month --- stalls for no reason, starts right up afterwards. Originally suspected loose battery terminals / ignition loosing power. Have tightened battery cables, "seems" to work for a month or so.
Wednesday, June 4th, 2008 AT 6:50 PM