Unusual Engine Sound (rattling sound) when AC turned ON

[GL86]

Hi Guys,

My 141 giving some noise when turning on AC. I am not sure why it is because we replaced V-belt, pulley and belt tensioner six months ago. If you guys have any idea why this rattling nose generating when AC On please share with me. I uploaded engine noise clip and can listen it from following url.

http://www.mediafire.com/file/13kn162gjyh6q6e/Engine_Noice_In_Idle_with_AC.mp3/file

Note: I replaced AC compressor with brand new one recently. No issues with cooling or any AC related problems

Thanks.

GL.

 

Edited October 2, 2020 by GL86

[GayanR]

Sounds like the A/c/radiator fan bearing has gone.Did you have a look at  where the sound coming from engine bay?

[GL86]

12 hours ago, GayanR said:

Sounds like the A/c/radiator fan bearing has gone.Did you have a look at  where the sound coming from engine bay?

Thanks Gayan for your reply. I tried but hard to identify seems its came out front side of the engine. I will listen carefully Radiator fan and check and let you know.

[GL86]

On 10/2/2020 at 11:43 PM, GayanR said:

Sounds like the A/c/radiator fan bearing has gone.Did you have a look at  where the sound coming from engine bay?

Hi Gayan,

I carefully listened to the sound, as I suspect its origin near alternator and front side of the engine not a radiator fan. Do you have any idea?

Thanks,

GL

Edited October 4, 2020 by GL86

[MaleCortana]

Compressor bearings perhaps?

[GL86]

On 10/4/2020 at 1:03 PM, MaleCortana said:

Compressor bearings perhaps?

Its brand new compressor replaced old compressor 3 months ago. I got some rattle sound when I try to drive hills with low speed. When gear changed that sound went off.