Q: What are the signsof a bad tensioner pulley?
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.
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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.
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