How To Know Fuel Pump Relay Is Bad

If the fuel pump relay has an issue while the vehicle is operating it will cut off power to the fuel pump which will cause the engine to stall.

How to know fuel pump relay is bad.

The fuel relay is a small square fuse usually located below the hood and in close proximity to the windshield. As the fuel pump relay controls power to the fuel pump any faults with it can cause issues with the fuel pump which can cause drivability problems for the vehicle. To check both operations remove the relay by pulling it out of its socket. Therefore any issues with the fuel pump relay will affect the flow of fuel to the combustion chamber and your vehicle might have problems starting.

The fuel pump s job is pretty self explanatory. A car s fuel pump relay turns on the fuel pump when the motor runs. So it s a no brainer that a malfunctioning fuel pump is bad news. The fuel delivery system includes the gas tank fuel pump fuel filter and the fuel relay.

A faulty relay may allow the vehicle to be. To pump fuel from the gas tank to the engine. One of the first symptoms of a problem with the fuel pump is a loud whining sound. How to tell if fuel pump relay is bad while driving.

If your car starts to slow down while you are driving it may be a sign of a bad fuel relay. The fuel delivery system includes the parts of the vehicle that keep a consistent amount of fuel or gas running to the engine. Usually a bad or failing fuel pump will produce one or more of the following 8 symptoms that alert the driver of a potential issue. When a relay is defective it is usually because of a bad coil or bad connection.

In some cases the car is liable to stop entirely leading to disastrous results. Whining noise from the fuel tank. Your car s fuel pump relay may be able to supply enough power to the vehicle to allow you to drive it. It s important to familiarize yourself with the warning signs of a faulty fuel pump that way you can address any problems before it s too late.

Another clear sign of a bad fuel pump relay is a car that suddenly begins to slow down without any provocation from the driver. The fuel pump relay going bad can affect the delivery of fuel to the engine. Usually a bad or failing fuel pump relay will produce a few symptoms that can alert the driver of the issues. Consult your owner s manual or a service manual to find the location of your fuel pump relay.

However if the relay is faulty you may notice some problems with the car s performance. An old or worn fuel pump may produce a noticeably loud whine or howl while running.