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Air conditioner noise

Tiny
EDDIE457
  • MEMBER
  • 2002 BMW 325I
  • 2.5L
  • 6 CYL
  • 2WD
  • MANUAL
  • 64,000 MILES
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.
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Monday, November 13th, 2017 AT 4:38 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,512 POSTS
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
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Tuesday, November 14th, 2017 AT 11:00 AM

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