Menu toggle

Noisy Air Conditioning

Bruce_english

Bruce_english

New member
When the air conditioning in my car is on, there is a loud whining noise, which rises with engine speed. The noise stops as soon as I turn the A/C off. The noise can't be heard outside of the car. I bought the car 3 months ago and had the A/C re-gassed just after I bought it. It still blows cold even in the current 25 degree heat. The compressor sounds OK with the bonnet open and the engine and A/C running. Any ideas on where I should direct my attention to fix this?

 
Noise is definitely coming from front of car, it's not there for the first 10 minutes or so of a drive, I'm beginning to think it is one of the front radiator fans, just noticed that they come on all the time the A/C is on. I have ruled out the heater blower as with the A/C off and it on any speed the noise is not present.

 
I had a whine from the dash area when the air con was on, and it was the heater blower fan. Changed the fan and all quiet again. Strangely my fan did not make a noise when heater was on.
 
It could be low gas. Mine made a whining noise after having the condensers changed. The garage then diagnosed a faulty pump. I took it somewhere else to be checked as the pumps are not cheap and it turned out the first garage didn't put enough gas in. Re-gassed correctly it was fine. So it could be you have a slow leak and it's low on gas.
 
My money is on one of the radiator fans. Had exactly the same problem with my 996 turbo and the N/S fan was the culprit. Changed and all quiet now. Mine always come on when the AC is on.
 
I'm in agreement with Tykes. Sounds like a fan needs investigating. Used to have this issue on my careers as the fan would come on with a/c. Hope this helps. John.
 
The more I look into this I too think its one of the radiator fans, so I have taken a chance and bought one, I'll post back here after I swap it out. Thanks for all the useful comments and suggestions.
Bruce
 
You must log in or register to reply here.

Posts made and opinions expressed are those of the individual forum members

Use of the Forum is subject to the Terms and Conditions

Disclaimer

The opinions expressed on this site are not necessarily those of the Club, who shall have no liability in respect of them or the accuracy of the content. The Club assumes no responsibility for any effects arising from errors or omissions.

Porsche Club Great Britain gives no warranties, guarantees or assurances and makes no representations or recommendations regarding any goods or services advertised on this site. It is the responsibility of visitors to satisfy themselves that goods and/or services supplied by any advertiser are bona fide and in no instance can the Porsche Club Great Britain be held responsible.

When responding to advertisements please ensure that you satisfy yourself of any applicable call charges on numbers not prefixed by usual "landline" STD Codes. Information can be obtained from the operator or the white pages. Before giving out ANY information regarding cars, or any other items for sale, please satisfy yourself that any potential purchaser is bona fide.

Directors of the Board of Porsche Club GB, Club Office Staff, Register Secretaries and Regional Organisers are often requested by Club members to provide information on matters connected with their cars and other matters referred to in the Club Rules. Such information, advice and assistance provided by such persons is given in good faith and is based on the personal experience and knowledge of the individual concerned.

Neither Porsche Club GB, nor any of the aforementioned, shall be under any liability in respect of any such information, advice or assistance given to members. Members are advised to consult qualified specialists for information, advice and assistance on matters connected with their cars at all times.

Porsche
Lockton
Pirelli
Officially approved
Oracle Finance
WEX Esso
Collecting Cars
Back
Top