Help Mysterious problems?

I have a 1996 ford taurus that i'm having problems with, first was a bad alternator… Installed a new one, then 1 month later it would start up then die… Installed a new fuel filter then it ran like new…5 days later it did the same thing, now it starts up again and dies after it starts, what could the problem be? I'm a do it myself kind of guy but i'm praying that it is not my fuel pump… That would be a nightmare, but i'm willing to do it. Get back to me as soon as possible please

A dirty mass airflow sensor most likely. Disconnect it and then start the engine. If it runs then replace the mass airflow sensor

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