There are a number of symptoms of a bad fuel pump, including location and replacement costs.
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Virtually all vehicles with an internal combustion engine have a fuel pump relay.The primary electronic switch that controls power to the fuel pump is located in the engine bay.When the fuel pump relay is switched on, it will give current to the pump so that it can function.If there is a fault with the fuel pump relay, it can cause issues with it, which can lead to drivability problems for the vehicle.A few symptoms of a bad fuel pump relay can alert the driver of the issues.
An engine that suddenly stalls is a symptom of an issue with the fuel pump relay.The engine will stall if the power to the fuel pump is cut off when the vehicle is operating.A faulty relay can allow the vehicle to be restarted a short while later, while a completely failed relay won't.
An engine that does not start is a symptom of a faulty fuel pump relay.The fuel pump will be without power if the relay fails.When the key is turned, the engine will not start due to lack of fuel.This symptom can be caused by a wide variety of other issues, so having the vehicle properly diagnosed is highly recommended.
When the key is switched on, there is no noise from the fuel pump.If you listen close to the outside of the vehicle, you can hear a low hum or whine coming from the fuel pump.If the fuel pump relay fails, it will cut off power to the pump, which will make it useless, and therefore silent.
The fuel pump relay is a very important part of the vehicle.If you suspect that your fuel pump relay is malfunctioning, or if your vehicle is displaying any of the above symptoms, you should have it inspected by a professional technician.
The symptoms of a bad or failing fuel pump relay can be found in this article.
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