Well guys, I did everything you suggested, but to no avail. The brick still quits when driving at any speed. 30, 50, 70 , even quit at the light twice and didn't think it would start. I replaced the fuel relay, with a good used silver terminal one, the supression relay, ignition coil and sprayed the contacts of the ecm with tuner cleaner. Even though the contacts were all spotless and showed no corrosion anywhere. The same for the relays. Please don't make me take it to the volvo dealer . Any other suggestions would be greatly appreciated. To make matters worse, tonite my winshield washers quit, as well as my heater.Intermitten problem with heater. I suspect dash sensor. Anyway, its getting cold out and I gave up on it today and for the weekend. Thanks.