My Sable will just die out of the blue. It will not restart unless I let it sit about half an hour. Don't know if this is part of the problem but it always seem to do it with about half a tank of fuel. Thanks for any help.

 

Does it do this at any time when the tank is full?
On earlier years they had some problems with hose connections at the fuel pump, but I don't know if that would apply to your year. Is there any way you can connect a pressure gauge to the fuel pressure tap and monitor if the pressure drops at the time it quits?