Car Fuel Pump Not Getting Power – Causes And Solutions

Car Fuel Pump Not Getting Power – Causes And Solutions

Your car’s fuel pump is an essential part of the internal combustion of the car’s engine. Because you need to keep the engine running, fuel supply is critical.

The supply of fuel to the engine is primarily the work of the fuel pump. Your car fuel pump should get enough power for a continuous fuel supply to the engine.

Car Fuel Pump Not Getting Power – Causes & Solutions

Unfortunately, there may be reasons why your car fuel pump is not getting power. You are worried and may not know what to do. Read on, as we give the causes of your car fuel pump not getting power and the solutions.

Causes For Your Car Fuel Pump Not Getting Power

Knowing the causes for your car fuel pump not getting power will save you time and money. You will not waste time and money fixing what does not need fixing.

A Possible Electric Issue

When there is an electrical problem with your car, it can affect its electric fuel pump. You will need to check on the ignition fuse and the primary relay circuit.

Any electrical problem with these two, and your car fuel pump will not get any power.

If the fuses are blown, or the ignition circuit has a wiring problem, you have a problem. Your car’s fuel pump ends up not getting enough power.

If your connectors are loose, rusted, or melted, you may have electric problems.

A Faulty Fuel Pump Relay

The fuel pump relay supplies a consistent voltage to the fuel pump. When you turn on the ignition, the fuel pump relay will immediately supply electricity to the fuel pump.

A fuel pump relay becomes faulty when the electrical voltage is too high. When the voltage is too high, the contacts get burnt.

Other causes are damage to the fuel pump relay, manufacturers defect, or normal wear and tear.

You must also note that your fuel pump relay has a lifespan. Mechanical relays have a shorter lifespan than solid-state relays.

Any fault with either of the two will result in your car fuel pump not getting power.

Problem With The Ignition Switch

The ignition switch provides power to the car fuel pump. Immediately you turn on your car key; the power control module directly powers the fuel pump.

The fuel pump then pumps fuel from the car tank to the car engine.

When an issue arises with the ignition switch, power to the car fuel pump is cut off.

Problems with the ignition switch can be caused by broken springs, worn-out ignition contacts, or temperature changes.

When the ignition switch fails, you cannot start your car, and your car fuel pump does not get power.

Car Fuel Pump Components Wear Out

Your car fuel pump is made up of different components. These components are armature, reservoir, filters, impeller, fuel level sender unit, and pressure regulator components.

If any of these components get damaged or wear out, your car fuel pump does not get any power.

The fuel level sender notifies you of the remaining fuel level in the car tank. The pressure regulator ensures enough pressure to supply the right volume of fuel.

Because the pump needs to be cold, the reservoir provides enough power.

The impeller is tasked with sucking fuel from the reservoir and sending it to the fuel pumps outlet.

At the same time, the armature is in charge of the generator, which makes the impeller rotate and turn.

When Your Fuel Is Contaminated

Fuel contamination causes serious harm to your car’s fuel pump. It’s caused by fuel that contains dirt, moisture, or rust.

Water in the gasoline will cause corrosion in the fuel pump components. When the storage caps on the tanks aren’t tight, it’s hard to prevent water from mixing with the fuel.

Car Fuel Pump Not Getting Power

Most manufacturers have incorporated filters in fuel pumps to prevent dirt from the car tank from getting into the pump.

When this filter becomes clogged or dirty, it becomes hard for the fuel pump to pump fuel through it.

The car fuel pump will have a hard time pumping oil, thus shortening its lifespan. A bad fuel filter will cause your car fuel pump not to get power.


The fuel pump is usually located on top of the fuel tank. Fuel from the car tank will keep the fuel pump cool.

But when the fuel level is low, the fuel pump will begin sucking in air with the fuel. The process of sucking in air with fuel can cause severe overheating of the fuel pump.

Apart from your fuel pump overheating due to running out of fuel, there are causes of overheating.

If you have an old model car, perhaps it doesn’t have the newer electric fuel pump. An electric fuel pump will help you utilize fuel that cools the car fuel pump.

Solutions For Your Car Fuel Pump Not Getting Enough Power

Taking care of your car fuel pump will always ensure its top shape. Most of the problems we have highlighted above will not occur when you do the following:

Use Quality Oil

When you use quality oil, you will avoid many problems if your car has a mechanical fuel pump.

Because the main work of your car fuel pump is to pump fuel, contaminated oil may damage it. Make sure you buy quality oil from brands like Shell, Chevron, Exxon, e.t.c.

It is also advisable not to fuel your car when the gas station gets fuel simultaneously. The station gasoline pump filters will not filter all the dirt stirred up when refilling their oil tanks.

Always make sure that the oil level of your car tank does not go below a quarter. Your car fuel pump should always be fully immersed in gas to prevent overheating.

Replacement Of Worn-Out Components

Remember to replace the worn-out components to keep your car fuel pump in good condition. Regular service will help you identify which parts that need cleaning or replacing.

Make sure you change your fuel filter yearly, primarily if it is not in the fuel tank.

Add an anti-ethanol agent to ensure that your fuel does not jell if you are not using your car regularly. Your fuel jelling will be enough reason for your car fuel pump not getting power.

Clean Your Fuel Pump

A clogged car fuel pump will not work correctly. If you have an old manual fuel pump, open it up and clear the debris out.

If your car has an electric fuel pump, use a fuel system cleaner. The fuel system cleaner will remove any build-up or blockage in the car fuel pump.

Your car fuel pump will not have a problem getting power.

What Is The Best Solution?

The best solution will depend on the cause of your car fuel pump not getting power. You will need to correctly identify why your car fuel pump is not getting power.

Each cause will need a speedy solution. Your car fuel pump is a significant factor for your car running smoothly.

If you don’t want to be stranded on the road, make sure you study the highlighted causes to react quickly.

We have given you the best solutions. Follow them well to ensure that your car fuel pump has no problem getting power.