Name That Sound !

txfromwi

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2016 LR4, 60K miles

The sound is very reproducible, and only occurs under these conditions.

1. It is absolutely an A/C related sound, it turns off instantly if I turn off the A/C.
2. It needs to be at least 85F outside, the hotter it is, the more sound I get.
3. Needs to be at a constant RPM for a fair bit of time.
a. Sitting at a light.
b. At highway speed at same RPM for a while
4. After all the above are satisfied, the sound is made when accelerating or even sitting still and increasing RPM.

I have a recording, but unfortunately cannot attached it here.

It's a high pitched "whistle".

Thanks!
 

16FujiDisco

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Can you hear it outside the vehicle? First thoughts that come to mind are the compressor pulley (maybe a bearing) or if you can’t hear it outside, something in the blower
 

AlexQ_VA

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The a/c blower? My squirrel cage is loose and and when it gets off balance it makes the noise. Forgive me if my nomenclature is off.
 

Johnnycakes

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My 2016 does the exact same thing. I always thought it was some kind of radio interference etc.
 

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