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Classic Truck Discussion Forum

Re: O/t 1990 Chevy K1500 no fuel supply update

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Tim Ga

05-18-2019 09:22:32




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Loook under the hood on driver side near the firewall there should be a red wire with terminal. Put power to it and fuel pump should run. If no run check fuel pump at connector near top of tank. Gray wire should have power (1) key on for 3 to 5 seconds (2) power to red wire. Black wires two of them are ground wires for fuel pump and for the gauge. The other wire is fuel gauge. Ground wires were problems. And the fuel pumps would quick. With power to the pump hammer tank and see if pump runs. Pump stills need to be replaced. Sorry for late responding.

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