First you need to determine if it is a fuel problem or electrical problem. Using a fuel pressure tester will help. Secure it to your windshield so that someone can watch it and when it does take note of the pressure, You can also run a noid tester to see if the injectors are loosing current and a spark plug tester. Simple second, hook up a scanner and see what codes are present and what information you get when the engine dies.
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