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1996 Audi A4 Quattro Question: low pressure port

 

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brown skin, 2.8L V6, Owings Mills, MD, July 12, 2010, 08:59
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unfortunately no one has answered my question and i really like to know where is the low presure port to charge the freon in my 1996 a4 quattro 2.8 please if any of you can help please i will apreciate

7 Answers
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  • Answer #1

    Visitor, July 15, 2010, 05:28

    There is not a low pressure port, charge on the high side. The port is in the front. It takes about a pound and half.

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    Visitor, July 15, 2010, 15:03

    thank you but i know it is not safe to charge it from the high port but i just find an adaptor and it works fine thank you

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  • Medium-star Best Answer
    hammer12 July 15, 2010, 05:55
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     Enthusiast

    The low preasure port should either be marked with a Black or Blue cap and sometimes labeled with a L for lowpreasure side. your hose that is purchased at an autoparts store for adding 134A freon will not fit on the high preasure side and most are quick connect couplers. Hope this helps.
    cdhaze@msn.com

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    Visitor, July 15, 2010, 14:59

    we are talking about an audi not about ford or chevy but thank you any ways

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  • Answer #3

    teoty July 23, 2010, 13:33
     Rookie

    you wont get an answer to your question because there is no service port or at list i did not find it,i disassembled all the a/c lines and i couldnt find it anywhere.you should get an adaptable service port and put it to refill.

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  • Answer #4

    Visitor, July 30, 2010, 13:59

    there are two ports on your a/c. the small size lines are high pressure, the port on the larger lines is always the low pressure .

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    Visitor, July 31, 2010, 09:55

    we are talking about an audi my friend not about a ford or chevy thank you any way

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  • Answer #5

    nails1 September 01, 2010, 14:52
     Rookie

    there is no low pressure port, take the car in and have the port installed I know it s--ks but after it is done you can service it when ever needed. Someone said charge on the high side but the pressure is greater than the pressure in the refill can so it will not work or could blow up in your hand
    Good luck

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  • Answer #6

    Visitor, September 13, 2010, 14:13

    There is not a low pressure port-only a low pressure switch. You can take that off and using an adapter, charge it from there. It's in the back passenger side near the firewall.

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  • Answer #7

    Visitor, September 26, 2010, 16:22

    The adapter will only fit one line the low side, the high side take a larger adapter.

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