1993 GMC Jimmy fuel pump

1993 GMC JIMMY
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POWDER HOUSE
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1993 GMC Jimmy V6 Four Wheel Drive Automatic 150000 miles
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I have repaced three fuel pump within a year and now this pump is not running. Am I getting the wrong pump or do I have a bad wire somewhere? How can I find the problem ? please help!!!
Dec 8, 2007 at 6:57 AM
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RASMATAZ
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Get the repair manual see below-Lets start by finding the fuel pump relay and fuel pump/oil pressure sending unit tested. This is how things goes-The computer energizes the relay for 2 secs for an initial build up pressure when vehicle fires up the fuel pump/oil pressure sending unit powers up the pump from there on. See the circuitry below


https://images.2carpros.com/forum/automotive_pictures/12900_oil_sending_unit_and_fuel_pump_circuit_21.gif

Dec 8, 2007 at 7:13 AM
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