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Air Con "Whistling"

Indy_387

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When I am running the air conditioner on my 89 VN Calais, every few minutes I hear a faint whistle, which I *think* is coming from the dash.

Has anyone had this problem before? The Air Con still works fine, but I'm wondering if this is something simple to fix or the start of a bigger problem.

Thanks in advance....
 

The1985divo

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Could just be a vacum leak, if it works fine then prob nothing to worry about
 
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scott8888

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mine does the same thing i just switch off then back on when it happens and the noise goes away.
Scott.
 

Bec

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Mine does it now and then too. I'm not worried about it...the aircon works great, probably why it sucks heaps of horsepower.
 

Garth

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more than likely just a vacume leak champ at the back of the aircon facia, or even something as trivial as a leaf or peice of crap stuck in the blower, look for gsmrobinson, he's the aircon buff

cheers
garth
 

Doctor Bob

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VN has a well known orifice tube whistle in the AC, there is a fix for it but you wilol need to get the system re-gassed etc & could be expensive
Cheers Rob
 

Indy_387

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Thanks for the advice everyone... much appreciated.
 

ndatkins

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my 89 vn does it, and my mums 92 calais with climate control does it too. Maybe its just from getting old
 

V85000i

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thread dig. but mine does this whistle too at about 1500-2000rpm when coasting. bit more or a bit less throttle and it goes away. only when AC engaged.
 
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