Menu toggle

Air conditioning not working??

Minimark

Minimark

New member
Right, i’ve had this ongoing problem with my air con , it used to work for a while then stopped, say 30 minutes , now it first blows cold air for 30 seconds then blows ambient air ....
I regassed it , 900g and there are no leaks ...
thoughts are either pressure switch or interior temperature sensor ??

btw its a 2001 3.2s
Anybody got any thoughts or ideas , many thanks
 
Mark,

Assuming the pump's engaged and funtioning it sounds like an electrical gremlin, as you've indicated, which is difficult to trace without swapping-out components.

It's probably more efficient to run a diagnostic check (PIWIS or equivalent) to locate the source of your problem.

Jeff

 
Was there any gas in the system when they vacuumed it out?
900 gram iirc is a total refill, but they pressure test the system first before filling it with the non green gas we have to use, or at least that is what the specialist did to my car after I changed everything over to new.

used my ac yesterday, and it does take a few mins to get going compared to my Skoda system, and does only seem to chill on demand rather than constantly, i.e. Chill to a preset cabin temperature you have chosen, then off until the cabin temp rises.
 
It was emptied and filled i few times due to trying different parts ie , compressor and each time it recovers between 875 and 885 g of gas , and when it fills it always adds 10g of oil and pressure tests before filling , it momentarily blows cold air , as it does the front fans cut in and get cold air , but only maybe 20 seconds then it back to ambient temperature!
 
As i am now not confident that that my "new” pressure switch is actually new , i was going to buy one from the dealer and try that and try and find someone that can run the car on the computer.

 
Mark,

When you turn the a/c off and on can you hear a slight change in the engine note? Having said that, I think I read somewhere that the a/c is never turned off completely, so make of that what you will.

I still reckon that your best bet is to find someone with the appropriate diagnostics before you commit to purchasing any parts. Maybe one of the HVAC flap valves isn't working properly?

Jeff
 
Then I think Jeff is totally correct, book the car in to a good indie for checking.
please let us know the outcome, always something to learn.
 
Right according to computer there is a "mixing flap” problem .... on the live screen the only thing showing no value is the mixing flaps .
Time to read up on them !!

 
75E58ED4CEAB430391DB50F4BA098E44.jpeg
Minimark said:
Right according to computer there is a "mixing flap” problem .... on the live screen the only thing showing no value is the mixing flaps .
Time to read up on them !!
Click to expand...


 
Turned out to be the compressor, after replacing the pressures switch and dismantling the reducer valve , a brand new compressor got the correct pressure to activate the pressure switch !
 
Good to hear that you're sorted Mark - what was the "mixing flap" error about then? So much for diagnostics.!

A/C compressors are expensive items, but at least you'll get the benefit of cool air now that temperatures are rising.

Jeff
 
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
Archant Dialogue
Back
Top