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So after getting my fuel pump replaced ran good for a week and went out one day to start it up to go somewhere and would not start, cranks and cranks. Starts on starting fluid (not used excessively just to make sure it was sparking) once started on fluid I can keep it alive for a short time with the pedal, then it dies again.
List of things recently replaced since the problem started
-fuel rail pressure sensor
-tps
-throttle body motor
In your other thread you mentioned it was throwing a lot of codes. Did the check engine light pop on at the same time the truck wouldn't start? Or has it been on for a while? Have you checked the fuel pump fuse and inertia switch?
I'm gonna go out on a limb here, and say - get your alternator checked. Or, a COP is arcing to ground and causing all sorts of havoc. Looks like dirty power.
I had a similar situation awhile back and it turned out to be the PCV hose collapsed on itself and cut itself. Take a look at it but also think vacuum leak.
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