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

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: Clutch pedal gets stuck

There may be a problem with the clutch pressure plate, the hydraulic clutch master, or slave cylinder binding. The clutch is the most likely problem, and would need to be inspected to be sure. I recommend that you have a...

Q: Rear differential leak

Hello. Depending on where the leak is coming from, this will determine what needs to be done. If it is coming from the front pinion seal, then it may be the pinion bearing. This is a common failure on this...

Q: Car shaking and making noise

You should have a cylinder contribution test and code scan performed to determine the cause of your problems. Malfunction of the ignition coils, mass air flow sensor, and timing chains are all common causes of the symptoms you described,...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...