Over the summer here in Houston, my 1993 850 (110K miles) died a few times - once while at stop sign, once while parked about one minute after starting it, once while driving 5 mph in a parking lot, and once while I was driving 50 mph on a service road. In the first 3 instances, the A/C was on high, but in the last instance the A/C was on but turned to low. When the car dies, it seems like an electric problem (there is no stuttering or jerking; the car comes to a smooth, decelerating stop and I didn't feel that the power steering or braking power was lost). All the dashboard lights flash on. In all but the first case, I was able to put the car back in park and it re-started immediately. In the first case, it took a few times, but then the car started back up. Any suggestions as to what may be the problem?