Why do my car just shuts off with no warning? Replc crank sensor.. Same problem

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Drive for a hour, and out of no were it shouts off with no warning lights.. The whole dash board lights up, it turn over then cuts back off.. Wait ten minutes sense Firestone replace my crank sensor and its starts right up and I can drive home. They can't find the problem, because the car Won't cut off on them. Please Help me. I herd value vapors, throttle body, etc ... Told them guys at shop and they said that isn't the problem..thank you have a bless day.. And the car has 225,123 miles on dash.. Car been drive good until this day.