Question about 1996 Audi A4

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Audi A4 Ac charge valve.

Where is located the ac fitting valve, low pressure.

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On that year a4 and a6 there is no low side charging port. (sucks)
The way you charge those systems is by evacuating all of the refrigerant, then with the vehicle off, add the correct amount of refrigerant to the high side port (turning the compressor over by hand occasionally)

Posted on Sep 12, 2009

  • Travis Mcilree
    Travis Mcilree Sep 12, 2009

    There is apparently an adapter that allow charging through the low pressure switch fitting, it is Mastercool MSC82272. I have never done this, I have always charged through the high side so I can't vouch for it's performance.

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249564_708560_3.jpg
249564_graphic_135.jpg

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