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AnswerTells the fuel pump when to kick on and off.

The relay has a coil and contacts, when energized, it holds the contact closed, thus the fuel pump operates.

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โˆ™ 2011-02-12 13:54:40
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Q: How does a fuel pump relay switch work?
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Will a fuel pump relay stop fuel pump from working?

If the fuel pump relay switch is bad then the fuel pump will not be turned on. Think of the relay like a light switch. If the switch has a bad connection then the light doesnt work.


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If the relay is bad, then the fuel pump will not work.


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Yes, it is a fuel pump relay.


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The fuel pump relay is under the front hood on the Passenger side, inside a cover held on by screws. the fuel pump relay is Blue or light green. The white one is the "main" one. It has to work to make the fuel pump relay to work when starting the car with the key. To test the pump, read diagram on fuel pump relay and use jumper wire to close the switch and if pump works you can hear it running in the trunk at that cover plate.


Can you bypass a fuel pump relay?

No You Will Not Be Able To Do This. The Relay Is Required To Make Your Electrical System Work For The Fuel Pump. The Relay Is A Switch Unto Its Self. It Shuts The On And Off As Required By The Fuel System. Even If You Were To Bypass It. The Pump Would Run All The Time. Suggest You Install A New Relay


Where do you find the fuel pump relay switch in a 92 Dodge Dynasty?

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Chevy does not have a reset switch. If you installed a fuel pump and it still won't work, Then you need to check the wiring harness at the pump where it plugs into the top of the tank. Chevy had a problem with the wire connector at that point.If that checks out okay, then check the fuel pump relay and fuse.


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Where is the fuel pump fuse and relay on 1994 BMW 525i and how can I test to see why my fuel pump won't work


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Blown fuse, defective fuel pump relay, or the pump itself is defective.


Why does the fuel pump on 1994 Chevy Camaro work at times and not at others?

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Why doesn't fuel pump work on 1980 volvo 242?

Either the fuel pump itself is defective, the fuse is blown, or the fuel pump relay is defective.


Why would the fuel pump not work on your 94 Buick park avenue?

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Where is an 1988 Mazda 626 fuel pump relay located?

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