Skip the auto shop - Our mechanics make house calls

Q: Bearings going out in one of the pulleys

asked by on

I believe I have bearings going out in one of the pulleys that the serpentine belt rides on. It sounds like a bearing is squealing when you let off the gas pedal, just before the engine is back at idle speed.

A: This is a common issue on the Expedition. T...

This is a common issue on the Expedition. There is a tensioner pulley, and an idler pulley. To verify which of these is the cause of the issue, an engine stethoscope can be used to listen with the engine idling, or the belt can be removed, and the pulleys allowed to spin individually, to determine which pulley has the bearing issue. You may want to enlist the help of a mechanic, such as one from YourMechanic, to assist in the location and replacement of the faulty pulley.

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: Having some serious coolant problems

Hello. If the car is overheating severely, the heads and/or block will warp and the engine will have to be rebuilt. Best not to drive it if you know it is overheating. If you are continually replacing coolant but it...

Q: Looks like grease spots on lug nuts

This is quite possibly a bad wheel bearing seal. When these go bad they can leak wheel bearing grease which will eventually be flung everywhere as the wheel rotates. I would recommend having an expert, like one from YourMechanic, to...

Q: tailgate lock not working

Hey there. Thanks for writing in about your tailgate lock on the 2006 Ford F-150. If your tailgate uses a manual key-operated locking system, it's quite possible that your lock is stuck or frozen due to debris, gunk or other...

Related articles

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...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.