Noise occur when A/c turn on.

[Wonka]

Hi guys, i need help, my toyota vitz(1300cc) recently replaced a a/c compressor. After that engine room make noise when i put the a/c to on mode. we thought it would be a/c compressor then i replaced another one. But the noise happen as same. Then i checked all pulleys and they are fine. But i replaced water pump for better purpose.but noise occurs. It happens 5min after a/c on. Do any one has idea what kind of noise this?

[MaleCortana]

  On 9/26/2020 at 4:32 PM, Wonka said:

Hi guys, i need help, my toyota vitz(1300cc) recently replaced a a/c compressor. After that engine room make noise when i put the a/c to on mode. we thought it would be a/c compressor then i replaced another one. But the noise happen as same. Then i checked all pulleys and they are fine. But i replaced water pump for better purpose.but noise occurs. It happens 5min after a/c on. Do any one has idea what kind of noise this?

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The A/C compressors you replaced were they recondition ones by any chance? I've seen an Axio that had the same problem *after* they changed the compressor (to a recon one) and it made a noise. The issues were with the bearings (I think that is the correct word) inside the compressor.

[Urmask]

What kind of a noise is this ? Is it a rattling noise, screaming or a humming or buzzing noise ?