Volks AutosSky Insurance
Results 1 to 2 of 2
  1. #1
    6th Gear

    Status
    Offline
    Join Date
    Nov 2009
    Location
    Lancaster
    Posts
    1,779

    Audi A6 - Pressure good but no cold air

    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?
    Atlas Grey A4 2.5 TDI Quattro Sport.
    Mods so far: Cruise control, DIS, Heated Mirrors, Tuning box, Xenonx, Centre Arm Rest, MFSW, RNS-E, SDS and Aero Wipers.
    To do: None yet.
    Next: Auto dip rearview mirror and Folding Mirrors.

  2. # ADS
    ADS
    Join Date
    Always
    Location
    Global
    Posts
    Many
     
  3. #2
    6th Gear

    Status
    Offline
    Join Date
    Nov 2009
    Location
    Lancaster
    Posts
    1,779
    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.
    Atlas Grey A4 2.5 TDI Quattro Sport.
    Mods so far: Cruise control, DIS, Heated Mirrors, Tuning box, Xenonx, Centre Arm Rest, MFSW, RNS-E, SDS and Aero Wipers.
    To do: None yet.
    Next: Auto dip rearview mirror and Folding Mirrors.

 

 

Similar Threads

  1. Is this any good for cold air feed pipe??
    By DJ_Troopa in forum A3/S3 Forum (8L Chassis)
    Replies: 13
    Last Post: 11th November 2011, 18:26
  2. Cold Air Intake on Audi A3 2.0 TDi
    By influxsg in forum A3/S3/Sportback (8P Chassis)
    Replies: 1
    Last Post: 30th June 2009, 11:59
  3. Audi S3 cold air intake.... ?
    By nadir in forum A3/S3/Sportback (8P Chassis)
    Replies: 49
    Last Post: 23rd September 2007, 05:38
  4. Survey on Cold Air Intakes for A4 1.8T's
    By imajn34 in forum Tuning
    Replies: 3
    Last Post: 26th December 2003, 13:08
  5. audi service....any good?
    By rockstar in forum A3/S3 Forum (8L Chassis)
    Replies: 2
    Last Post: 20th February 2003, 17:07

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Single Sign On provided by vBSSO

Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

Content Relevant URLs by vBSEO