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Hi.
2003 307 auto hatch 2 Litre. A whining noise coming from somewhere but stops completely when Air con is turned ON. Been told its the Aircon compressor. Any one know for sure? Suzanne (Newbie)
 

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I'd suspect it's the bearing on the compressor clutch pulley is worn rather than the compressor.

When aircon is switched off the pulley freewheels without turning the compressor. When you switch on the aircon, the AC clutch locks the pulley to the compressor and so turns the compressor. The bearing is no longer in use so the noise disappears.

This would likely be a much cheaper repair than the whole compressor along with safely emptying the AC system and getting a regas.
 

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I agree BUT problem is some aircon clutches are not available separately you need the whole pump !!!

We managed to get a replacement bearing from a bearing supplier last time as the clutch was not available.
 
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