Air conditioner noise

2002 BMW 325I
64,000 MILES • 2.5L • 6 CYL • 2WD • MANUAL
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EDDIE457
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When I press A/C on I hear a whine noise that increases with idle as soon as I depress A/C button whine stops . even though the fan is running I have no whine noise. I am told my compressor is low on oil. I can find no video to add compressor oil or no shop that knows how to do it.
Nov 13, 2017 at 4:38 AM
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STRAILER
  • ✓ASE Certified Mechanic
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It sounds more like the air conditioner belt need to be replaced which will make a whining noise once the system is turned on.

Here is a guide that will show you how to change the serpentine belt:

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

Here it is on your car:

https://www.2carpros.com/diagrams/bmw/325i/2002

Please let us know what happens.

Cheers, Ken
Nov 14, 2017 at 11:00 AM
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