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Air conditioning not working??

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Minimark
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Minimark PCGB Member
2019/05/15 16:45:30 (permalink)

Air conditioning not working??

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 

8 Replies Related Threads

    Motorhead
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    Motorhead PCGB Member
    Re: Air conditioning not working?? 2019/05/15 17:11:31 (permalink)
    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
     

    987.2 Cayman S
    North Bedfordshire
    PCGB R10 and R24
    911hillclimber
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    911hillclimber PCGB Member
    Re: Air conditioning not working?? 2019/05/16 07:32:14 (permalink)
    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.
    Minimark
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    Minimark PCGB Member
    Re: Air conditioning not working?? 2019/05/16 09:13:36 (permalink)
    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!
    Minimark
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    Minimark PCGB Member
    Re: Air conditioning not working?? 2019/05/16 09:17:05 (permalink)
    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. 
     
    Motorhead
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    Motorhead PCGB Member
    Re: Air conditioning not working?? 2019/05/16 13:19:58 (permalink)
    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

    987.2 Cayman S
    North Bedfordshire
    PCGB R10 and R24
    911hillclimber
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    911hillclimber PCGB Member
    Re: Air conditioning not working?? 2019/05/16 15:50:39 (permalink)
    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.
    Minimark
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    Minimark PCGB Member
    Re: Air conditioning not working?? 2019/05/18 12:49:50 (permalink)
    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 !!
     
    Minimark
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    Minimark PCGB Member
    Re: Air conditioning not working?? 2019/05/18 16:18:16 (permalink)
    Minimark
    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 !!
     




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