[jdorjoe]

I have a '97 Riviera w/supercharger. It stalls. A new fuel pump in August seemed be the fix until last week, on a long road trip, it began stalling again. It was hot and we expected it to be heat related. It stalled first at 70 mph and restarted while still rolling. An hour later it stalled again and restarted but stalled more and more frequent until it was stalling every few minutes. We rented a car and left the Riviera at a Buick dealership. In a week at the dealership it never stalled once. The odometer showed they had driven more than 300 miles and they reported letting it idle for several hours.

It was a cold day when I drove the vehicle 300 miles home with no problem. The next day was cold and after sitting 15 hours the car stalled a block from home. It is incredibly frustrating in that it will strand me totally - get to the point of running for only a minute or two and even refusing to start. I have the car towed in and it will start right up and they drive it off the truck.

The only time it stalled at the dealership, the fuel pump failed the pressure/capicity test. After a new fuel pump, the car ran for about 5,000 miles before stalling. Another time the dealer diagnosed it as a bad battery, even though the car would spin over normally. I suspected that this diagnosis was bogus, but after a new battery, the car ran about 3,000 miles before stalling.

I suspect electrical issues. It's as if the fuel pump gets turned off.

I saw this posting and thought I'd add to the woes. If any solutions present themselves I'll let you know. Ideas or solutions from you-all are appreciated.