A6 C4 AEL AC blows on the same temperature

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  • Joop
    S2Forum Fanatic
    • May 2015
    • 89
    • Country: Germany

    #1

    A6 C4 AEL AC blows on the same temperature

    As i described my AC does not works properly.
    No matter LO or HI its blows the same temperature air.
    I was changed cabin filter,but that was not the problem.

    I think not the gas is the problem because the strength of the air is
    fine.
  • AndyP
    S2Forum Zealot
    • Feb 2004
    • 6049
    • Country: England

    #2
    The gas does not change the amount of air coming through, only the temperature. I'd get it leak tested, I bet you've got no gas
    sigpic
    1991 Audi S2 3B - 2.5 Stroker engine
    1997 A6 2.5TDi quattro avant - C4
    1976 RD250E / 350LC cafe racer

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    • shaun5
      S2Forum Extremist
      • Mar 2007
      • 1610
      • Country: United Kingdom

      #3
      i expect the temperature change stepper motor is broken.

      Do some research, the climate control display will show you a fault code (on my S6 it did)

      Comment

      • Joop
        S2Forum Fanatic
        • May 2015
        • 89
        • Country: Germany

        #4
        Originally posted by AndyP
        The gas does not change the amount of air coming through, only the temperature. I'd get it leak tested, I bet you've got no gas
        Thank you for your answer.
        Well the hot is also not hot enough is it depends too on gas?
        How can i test the gas level?

        Comment

        • shaun5
          S2Forum Extremist
          • Mar 2007
          • 1610
          • Country: United Kingdom

          #5
          Originally posted by Joop
          Thank you for your answer.
          Well the hot is also not hot enough is it depends too on gas?
          How can i test the gas level?

          The test port is on the off side of the air-con rad (RHD car) you will need specialist equipment to test the pressure.

          Comment

          • Joop
            S2Forum Fanatic
            • May 2015
            • 89
            • Country: Germany

            #6
            in the hidden menu n channel1 i can see 15.7 but untill now i could not find what doest it mean.
            Furthermore i can not step in the channel1 if there is more faults,or how can i see multiple faults?

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            • mdz
              S2Forum Maniac
              • Jun 2012
              • 775
              • Country: Latvia

              #7
              15.7 Air Flow Flap, sporadic block


              If there's more than one fault, display will cycle them.

              Comment

              • Joop
                S2Forum Fanatic
                • May 2015
                • 89
                • Country: Germany

                #8
                Originally posted by mdz
                15.7 Air Flow Flap, sporadic block


                If there's more than one fault, display will cycle them.
                is that the flap motor error?Is there a dedicated fuse for Flap motor?

                Update:as far as i know the flap motor only control
                the direction of the flow.
                Last edited by Joop; 14 August 2015, 12:32.

                Comment

                • Joop
                  S2Forum Fanatic
                  • May 2015
                  • 89
                  • Country: Germany

                  #9
                  Just came back from the AC service.Filled with new gas,anyway there was still 0,45kg gas in it.
                  And afterall.................
                  The cool isn't cool enough,i am not sure but maybe is the same with outside temperature.
                  The mechanic said that it can be the falt of ac compressor.

                  I was tested the ac clutch in the vag-com.
                  I can hear the click when testing output.
                  Soo don't know

                  Update:
                  Just checked the 20th channel at climatronic.
                  It is change the voltage level:11.4-to 11.5 when i didnt do anything

                  Comment

                  • MGaz
                    S2Forum Maniac
                    • Feb 2008
                    • 698
                    • Home: United Kingdom Current: Wales

                    #10
                    Originally posted by Joop
                    As i described my AC does not works properly.
                    No matter LO or HI its blows the same temperature air.
                    I was changed cabin filter,but that was not the problem.

                    I think not the gas is the problem because the strength of the air is
                    fine.
                    sorry if its a bit off topic,.. but where is the cabin filter on the A6 c4 ael?
                    C4 A6 AEL avant quattro: daily

                    TYPE-85 Coupe Quattro: clicky
                    2.5L GTi engineering RE2500 190hp.180lb
                    Schrick 272 cam
                    C A C 2.5" T304 Exhaust
                    ITG filter

                    Comment

                    • Joop
                      S2Forum Fanatic
                      • May 2015
                      • 89
                      • Country: Germany

                      #11
                      Originally posted by MGaz
                      sorry if its a bit off topic,.. but where is the cabin filter on the A6 c4 ael?
                      you have to take of the windshiled wiper and the cover.
                      Under a plastic case with 3 bolts under it you can find the cabin filter.

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