Serpentine belt whine noise?

2011 CHEVROLET MALIBU
180,000 MILES • 2.4L • 4 CYL • FWD • AUTOMATIC
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DWD HB
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the water pump changed in my car (listed above that is the LT model) after the old one was leaking. but now the new original one make noise and increase with rpm and I feel the speed decreases very fast when I m driving for a bout 120km and then stop pressing the petrol pedal. the mechanic said about the noise will go with the time. is this true? or what is the problem?
Mar 13, 2017 at 2:15 AM
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KASEKENNY
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This is more then likely oil or coolant has gotten on the belt causing this noise and normally once this happens the only way to fix it is to replace the belt.

Here are some guides that will help with this:

https://www.2carpros.com/articles/car-squeaking-noise

https://www.2carpros.com/articles/replace-serpentine-belt

I also attached the info from the manual on how to replace the belt as I would just replace it and then make sure the noise is gone. Let us know what questions you have. Thanks
Nov 28, 2020 at 8:04 AM