Skip the auto shop - Our mechanics make house calls

Q: Noisy bearings in the water pump that has no leaks

asked by on

What causes noise bearings in the water pump that doesn't leak? What is the average lifetime of the car's water pump in miles?

A: The bearings inside of the water pump are s...

The bearings inside of the water pump are sealed from the outside air by a rubber seal. They are also sealed from the inside water by a rubber seal. If they weren’t, the water would get on the bearing and then rust and fall apart. So the reason they make noise is because, generally, if it happens too soon, it is just a cheaply manufactured water pump.

I’ve had Toyotas that have gone 200,000 miles and still had the original water pump. Also, I’ve seen cars like Chrysler that have had water pump wear out after 40-50,000 miles. Most of it has to do with the design of the engine.

Now, of course, you’d want to change the antifreeze regularly like you are supposed to. When I was a kid, that was every 3 years or every 36,000 miles because it wasn’t that good. It was the old green stuff. But today, they have a long-life antifreeze. Some of it is 7 years or 150,000 miles.

So buy the longest extended life antifreeze as you can. That way, when you change it, you don’t have to worry about the water pump going out because you are not getting dirty fluid that gets under seal, which then eats the seal off and the coolant gets into the bearings and eats them up. There is no average life time, because there are so many different designs out there, but if you take care of them like that, you are going to get the most lifetime you can.

If the noise gets progressively worse, you may want to have the sound inspected and diagnosed by a certified mechanic. A technician from YourMechanic can come to your car’s location to listen to the sound and let you know what needs to be done.

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

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: My heater blows a lot of air it just doesn't get very hot

Hello there, a few common faults will cause your vehicle to have air that is not very hot. Without knowing the year, make and model of the vehicle I can only provide a broad answer. The most likely faults are...

Q: Tire Issue

If the bubble is caused by air leaking from the inside of the tire into the carcass or body of the tire, the tire could blow out without warning which is obviously risky. Bubbles are typically caused by manufacturing defects...

Q: Weird sound when I push the brakes. Replaced my brakes 5 months ago.

Hi and thanks for contacting YourMechanic. After replacing the brakes on your vehicle, the left side could have the wheel loose on the lug nuts or the wheel hub bearings could be going out. Lift the vehicle up and check...

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...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...