1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Audi A6 - Pressure good but no cold air

Discussion in 'Air Conditioning' started by BlackQuat, Aug 28, 2012.

  1. BlackQuat

    BlackQuat Well-Known Member
    VCDS Map User

    Joined:
    Nov 24, 2009
    Messages:
    1,851
    Likes Received:
    46
    Hi.
    We have a Audi A6 2002 1.9 TDI 130.
    When we got the car the ECON light was permantly on. I ran vcds and found a fault with the G65 sensor. Actually it'd been fully removed and the connection damaged. So I repaired the connection, fitted a brand new G65 sensor and had the system recharged.

    It then turned out that the clutch ( I say clutch but it doesn't have one as it has a N280 valve) was missing. So I got a new plate for it so it actually did drive the compressor.

    With VCDS I see a pressure increase with ECON being turned off and when I turn it on the pressure decreases. But I do not think the pressure goes up enough when the aircon is activated. My A4 goes to 9-12 bar when using aircon. Where the A6 barely hits 5 or 6.

    I have run the car for 3 minutes with aircon on, both sides on LO.
    I get:
    A/C Valve (N280) Current: 0.650amp
    A/C Valve (N280) Duty Cycle: 64.5%
    High Pressure Signal (G65): 19%
    Refridgerant Circuit Pressure (G65): 4.6Bar

    It seems low, but the actual pressure is fine.
    Could this be the N280 valve not opening enough to let the pressure build?
     
  2. Google AdSense Guest Advertisement



    to hide this advert.
  3. BlackQuat

    BlackQuat Well-Known Member
    VCDS Map User

    Joined:
    Nov 24, 2009
    Messages:
    1,851
    Likes Received:
    46
    Well after the huge amount of suggestions.
    I did something I didn't want to, i bought a top up can. Charged it up and it's working perfectly.
     

Share This Page