Have struggled with an intermittent stalling/loss of power problem that occurs at speed for about a year now. Typical experience is that car will stall on highway requiring that I coast to the side of the road. It seems that I can sometimes avoid the complete stall by feathering gas pedal. Tachometer does NOT drop to zero when problem occurs. If car does stall, it generally restarts after sitting for a minute or less and I get underway with no further incident. This happens maybe once a month. Dealer replaced the fuel pump in the tank. I've replaced RPM sensor and am currently waiting for a fuel pump relay. I've looked through FAQ but haven't really come up with anything. Help.