Question about Chevrolet 1500
fuel pump operates off the oil pressure switch the first 5 seconds upon
starting. to test turn the key to the on position and listen for the
fuel pump running. it does this to prime the pressure up and to stat
if not heard replace the oil switch. the way this operates is when the engine reaches full oil pressure the computer shuts off the oil switch and turns on the fuel pump relay to continued the circuit to the pump.
Posted on Aug 26, 2010
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Posted on Jan 02, 2017
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