Skip the auto shop - Our mechanics make house calls

Q: How long will my fuel pump last?

asked by on

How long will my fuel pump last?

A: When trying to figure out how long a fuel p...

When trying to figure out how long a fuel pump will last, many factors need to be considered, including the age of the pump, its level of use, and fuel system contamination. Older vehicles used a fuel system which recirculated fuel between the tank and the engine and then the residual fuel back to the tank. These return fuel systems would require frequent fuel filter changes since the fuel made so many trips through the system.

Modern systems use a returnless type fuel control and an integrated fuel pump module. These systems only deliver the fuel the engine requires and therefore filter less fuel, which generally extends their life cycle. The filters for the most part are integrated onto the pump module assembly and are usually replaced along with the pump as a whole unit when service is required. Barring any mechanical failure or defect they will often go to well over 100,000+ miles of service before requiring replacement. Many will go even closer to 150,000+ or greater. The fuel in your vehicle both lubricates and cools the fuel pump. The greater life cycle of the returnless fuel pumps is also due to the fact that the fuel does not make round trips from the tank to the engine where it would pick up heat and return it to the tank, so the system will stay cooler. None of this will affect or change a pump that fails due to pinched or damaged fuel lines, or any type of electrical concern such as high resistance on a wire or in a connector. In fact, the electrical system of the car has a great impact on the function and operation of the fuel pump.

Using quality fuel and regular overall maintenance can help to increase the pump's life. Look for signs of a failing pump and seek a quality technician to help diagnose the problem before you end up on the side of the road or the back of a tow truck.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Why caution should be observe during compression test?

You should disable the fuel pressure pump and spark of the ignition. This way you do not burn out the ignition system and flood the engine with fuel. The best way to do a compression test is to operate the...

Q: My car not starting because there is no fuel pressure,

You'll have to remove the back seat bottom and gain access to cover to the fuel pump. Test the fuel pump's wiring to see if power is getting to the pump, specifically on the blue and black wire. If there...

Q: Leak between fuel line and gas tank

Your fuel tank is comprised of plastic lines and components. There is likely a crack in one of the lines or in the fuel pump. You need to have it inspected further to determine the cause. If you would like...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...