Skip the auto shop - Our mechanics make house calls

Q: What are the signsof a bad tensioner pulley?

asked by on

The car is running well, but has a very loud whining sound, that is consistant with acceleration, and de-acceleration. No other symptoms, just noise that gets louder the faster I go, and quieter when I slow down. Is it the tensioner pulley??

My car has 217123 miles.
My car has an automatic transmission.

The most common cause of noise in the front of the motor having to do with the accessories is the tensioner and idler pulley bearings get noisey. I have also seen where the a/c compressor pulley bearing gets noisey. You should have the noise listened to and diagnosed by a mechanic like one from YourMechanic. The mechanic will isolate the noise to one or more of these pulleys by using a listening device and then remove belt and test each pulley for binding bearings.

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: Can a shocks or struts that fits the 2003 Lincoln Navigator also fits the 2003 Lincoln Aviator?

Hello - no, the Navigator is built on the very large SUV platform build by Ford (Expedition), whereas the Aviator is built on the Ford Explorer/Mercury Mountaineer platform. If you are having problems with finding shocks and struts for your...

Q: I have a 2004 Pontiac Montana and the air compressor does not work anymore. Could it be a simple fuse replacement?

Hi there. Check the fuses for any blown fuses. If the fuses are good and working, then check the clutch wire to the compressor and see if there is power with the air conditioning switch on high and fan on...

Q: When my car idles it sounds like its cutting off for a bit and then goes back to normal.

Hello, thank you for writing in. The code you are getting is for a pressure issue at the fuel rail. It is best to test pressure here because you know exactly how much fuel the engine is getting after having...

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 Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.