1991 Chevrolet S10 Troubleshoot a Fuel Pump Relay Switch

1991 Chevrolet S10 Troubleshoot a Fuel Pump Relay Switch

A fuel pump relay in a 1991 Chevrolet S-10 acts as a breaker switch, in a way. When there is no power, the switch inside the relay opens up, not permitting power to reach the fuel pump. Once energized, a magnetic force pulls the switch downward and m...

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