For about a month and a half the car has been dieing on a whim. It's a '97 Grand Prix with the 3.8 non supercharged. There is nothing that seems to cause it, no signs it's going to die, no hesitating, no stalls, no codes, nothing. 50/50 chance of it starting right back up or making me wait 5-30 minutes to start again. When it dies and when it won't start, I have full power to everything, the engine cranks fine, but will not fire. When it runs, it runs great and normal. I can't figure it out, the dealership had it for four days and couldn't figure it out. Of course it didn't do it while they had it. It did it again today for the first time since I got it back from the dealer about a week and a half ago. The only thing anyone can think of, including myself, is that the crank sensor may be going out. But at $400 to replace on a whim, well..... I would do it myself but don't have the time as I'm in the middle of taking my wife to our new home in Tulsa 500 miles away, finding a new job for myself, and then moving all of our stuff, and trying to sell our house on top of it all. I'm towing the car up there this weekend and leaving it until I get there (get to drive the Blazer in the mean time ) and have it fixed up there so at least I have someone to take it back to if it still has problems. Sorry for the long winded post, but I'm at a loss on this damn thing. Can anyone think of anything else that might be causing this?