Q: Serpentine belt
My car has 127,000 miles we were told we needed new cerpintine (not sure of spelling) belts so we had two replaced for over $300. Now the car makes a very loud whining noise when we start it, I called the mechanic and they said it could be the pully. Is this right? Or did they put the wrong belt size in? The car never made this noise before.
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Hi There, It sounds like the serpentine belt tensioner pulley may be incorrectly adjusted or potentially worn out. The tensioner pulley is a pulley that allows the tension of the belt to be adjusted. This pulley has a bearing inside that spins as the belt turns allowing it to spin freely. When this bearing begins to wear out, this may cause the pulley to produce a whining sound as you describe. I would suggest having a professional from YourMechanic come to your location to diagnose and repair your vehicle.
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