How can you tell if your fuel pump is not working?
How can you tell if your fuel pump is not working? The absence of a particular noise could be a sign of a failed fuel pump. To test this, turn your vehicle's key to the "ON" position, and have another person stand next to your vehicle's gas cap. If the person hears a whining electronic noise, your fuel pump is working. What happens when the fuel pump is not working properly? If the fuel pump fails completely - to the point of not being able to provide enough fuel for the engine to run, the vehicle will refuse to start...