1991 chevy c10 fuel pump runs with relay removed

Asked by Guru969JHW Oct 10, 2022 at 03:50 PM about the 1991 Chevrolet C/K 1500 Silverado LB RWD

Question type: Maintenance & Repair

1991 chevy c1500  fuel pump runs with switch off and relay removed

2 Answers

158,165

Start tracing wires. With something this old who knows what a previous owner did to keep it running. The fuel pump circuit is supposed to be controlled by the ECM. So either the circuit has been bypassed for some reason or you have a short. Hope that helps! Jim

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