DennyW, Thanks for that comment, it is worth checking out. I have been reading other stories on the Internet about 1992 Luminas and there are a lot of similar stories, some of which are due to the trans lock up stalling the engine by not downshifting so maybe a trans flush is in order but that doesn't explain the cutoff while running at 70 mph so I think your suggestion is worth checking out. The pump is inside the tank and is electric so it is a hassle to change but the external resistor should be easy to check. Your repair experience is priceless! The truth is that most of my experience has been in building modified engines, not very well, and then then not worrying about the fact that most of my rebuilds seldom made it to 50,000 miles now that I think back so the family car as a transportation device with high mileage is a bit beyond my experience. Even so am I right that the symptoms do not match a diagnosis of burned valves? If the valves were burned it would not run well at all? Note that these later models get pretty complicated and it will only get worse if/when hybrids become common. Thanks a bunch, you are a gem!

Don Shillady
Retired Scientist/Teen Rodder