The fuel pump relay is an digital component the is discovered on practically all vehicles equipped through an internal combustion engine. It is often found in the fuse box situated in the engine bay and functions as the primary electronic switch the controls power to the fuel pump. The fuel pump relay is usually managed by the ignition or powertrain control module, and also when switched on, will administer current come the fuel pump so that it may function. As the fuel pump relay controls strength to the fuel pump, any type of faults v it can cause issues v the fuel pump, i m sorry can reason drivability troubles for the vehicle. Normally a poor or failing fuel pump relay will develop a few symptoms that have the right to alert the driver that the issues.

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1. Engine stalls

One the the first symptoms the an issue with the fuel pump relay is an engine that all of sudden stalls. If the fuel pump relay has an concern while the car is operating it will cut off strength to the fuel pump, i m sorry will reason the engine come stall. A faulty relay may enable the car to be restarted a short while later, when a fully failed relay will not.

2. Engine does no start

Another symptom the a faulty fuel pump relay is an engine the does not start. If the fuel pump relay stops working the fuel pump will certainly be left there is no power. The engine may still crank as soon as the vital is turned, however it will not have the ability to start because of lack the fuel. This symptom can additionally be resulted in by a wide variety of various other issues, so having the auto properly diagnosed is extremely recommended.

3. No noise from the fuel pump

Another symptom that might hint in ~ an problem with the fuel pump relay is no noise from the fuel pump once the an essential is switched on. Most fuel pumps will develop a low volume hum or whine which can be heard from inside the car if listened because that closely, or indigenous the outside of the vehicle, near the fuel tank. If the fuel pump relay fails, the will cut off strength to the fuel pump, which will certainly render it inoperable, and therefore silent once the ignition is on.

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While the fuel pump relay is a very simple component, the plays a very important role in the ideal operation that the vehicle. If your auto is displaying any kind of of the symptoms above, or you suspect that her fuel pump relay is having an issue, have the vehicle inspected by a professional technician to identify if the component have to be replaced.

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