I have a '93 Camaro Z28, 5.7 LTR, 4 speed automatic, with about 96K miles on it. Recently I have been experiencing intermittent stalls. There doesn't seem to be any common factor in any occurence. Once it stalled while sitting at a stop light right after start up. Another day after driving for an hour or so, it started bucking. It all started after I fueled up one day, but mechanics seem to think that has no bearing. I just had the fuel pump changed because it was very loud and the mechanics checked the tank for particles and changed the fuel filter while they had everything out. They all seem to think it is an electrical problem but can't pin it down. They have checked plugs and wires and say it isn't the distributor. They went from front to back and tightened every wire they could find on top and underneath. I left it with them for a week and they drove it every day--nothing! One of my friends works on transmissions and hooked up the code detector under the steering column---still nothing. Hope someone can help. Thanks!