After driving the car for a few minutes it sputters all lights come on-then dies

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The vehicle starts up and will idle just fine. As soon as I start driving and accelerating to higher speeds the car sputters and will then shut down. After I wait a few minutes it starts right up- only this time with the check engine light on. I have taken the car to 2 shops ( not dealerships ) and have been told that it can either be bad fuel or the optispark distributor. Either way not sure if this mechanical or electrical. Only 112k on the clock- probably still has plenty of miles left. I am not an auto tech- but my guess here is that this might very well be a fuel pump related issue. I use shell 93 octane for this bad boy and when it was working before this it was really moving. Any other answers here. Thanks.