If it's like my '88 Chevy pick-up... the "computer" turns on the fuel
pump during cranking, but gives control to the oil pressure switch once you
release the key and the engine is running.
There should be a terminal in the diagnostic plug under the dash where
you can manually turn the fuel pump on by jumping twelve volts from the
cigarette lighter or fuse block. If the car runs with the pump manually
activated... I would look for a bad oil pressure switch. It was terminal
"G" on my truck... the lower, left hole in the ALDL plug (find out from
someone else if your is the same).
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