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Thread: Air Con Leak - Low Pressure Side

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  1. Re: Air Con Leak - Low Pressure Side 
    #11
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    What will just replacing the expansion valve achieve?

    will just replacing the compressor clear the above faults?

    im not sure I can afford a new one at the moment - they aren’t cheap!!
     
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  2. Re: Air Con Leak - Low Pressure Side 
    #12
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    Well looks like I’ve got no ac now so guess I’ve lost the refrigerant somewhere overnight. Not blowing cold at all.

    So will I need to replace Expansion valve and compressor?

    Dont think I’m keen on replacing the evaporator. That job looks evil. That’s dash out / cross car beam / HVAC unit. Don’t think I’m keen on that at all.

    is expansion valve easy enough to do? Can you do it from the top or is there better access from underneath?
     
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  3. Re: Air Con Leak - Low Pressure Side 
    #13
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    I replaced the valves in both the low pressure and high pressure pipes as it appeared that one of them was "bubbling" so this could of been a cause as to why i lost all the refrigerant overnight.

    When we got it back on the machine it read 0 bar.......

    Regassed it now....but wasn't achieving 8 degrees c, only about 14 this time....so must be a bad compressor.....


    Replaced both valves with 8E0 820 855 genuine from dealership.....

    But after regassing both appeared to be bubbling as well.....

    I made sure to tighten them well with the valve tool....


    Perhaps the threads have gone on the pipes?
     
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  4. Re: Air Con Leak - Low Pressure Side 
    #14
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    My mechanic Matt ran into this with his 1.4 TSI Golf 5 a few days ago, he recommissioned the AC after it had been dead for years and it worked, then it stopped and the compressor has failed, they suffer a very high failure rate. He is in denial and is trying to find any way of avoiding changing it.
    A petition has been started to allow the use of synthetic fuels when they become available, this may allow the continued sale of ICE vehicles post 2030 and the use of classic vehicles well into the future… Their use may even be able to rival electric vehicles given the chance. Please sign this petition IF you feel the infernal combustion has a future if sustainable fuels are made available


    https://petition.parliament.uk/petitions/588774
     
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