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Old 28-06-2009   #1
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Noisy Air-Conditioning (air con) Advice wanted

Hello. Our 04 Punto 1.3 Multijet has developed a strange noise on the air con. You press the fan switch to activate the a/c and a loud whistling / hissing noise appears. This is not a blockage in the general air ducts as there is no noise with the blower fan, you can have the fan blower (no a/c) on full blast and there is no strange noise. If you push the button for a/c shortly afterwards there is this strange whistling / hissing. The noise would appear to be in the cabin. I have checked under the bonnet and the belts are not slipping. The compressor appears to enaging and dis engaging OK. The noise is not form the compressor. The noise does not change with fan speed or engine revs. Also it no longer appears to be cooling the air, just makes strange noises, also it may smell a little strange.

All advise is welcome. Do I need to get the gas checked? Anybody else had similar problems?
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Old 29-06-2009   #2
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Re: Noisy Air-Conditioning (air con) Advice wanted

Had a quick bit of further investigating on the web at lunch and a further look at the car tonight. There are no a/c moving parts in the cabin. The noise is coming from the a/c vibrating / resonating.

Would therefore be reasonable to assume that it needs re-gassing. My logic being that something is short of lubricant / gas.

Please any advice / comment.
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