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Which hose is this?

Discussion in 'A3/S3 Forum (8L Chassis)' started by finesse, Mar 3, 2010.

  1. finesse
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    finesse Active Member VCDS Map User

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    [Mar 3, 2010]
    Hi chaps,

    Need a replacement hose as I found this in the engine bay perished!

    code/part number ?
    Where can I get one from?

    Sorry for the poor quality picture, I am currently experiencing vcds error; 17705 - Pressure Drop between Turbo and Throttle Valve (check D.V.!)

    My first course of action would be replace then see if anything changes.....


    [​IMG]
    #1
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  3. Sandip
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    Sandip Well-Known Member

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    [Mar 3, 2010]
    Change that hose and also check the hose that goes from the charge pipe to the dv, is it boosting normal?
    #2
  4. finesse
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    finesse Active Member VCDS Map User

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    [Mar 3, 2010]
    Sorry, I do not know the engine bay very well. Charge pipe???


    No, the issue is intermittent sometimes I go into a limp mode but only briefly. Lags up to 3K RPM.
    #3
  5. scottie123
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    scottie123 (●̮̮̃•̃) (●&# VCDS Map User

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    [Mar 3, 2010]
    ~Look at your dv and follow the pipes back from it :)

    Thats the easiest way :~P
    #4
  6. finesse
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    finesse Active Member VCDS Map User

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    [Mar 3, 2010]
    Nice one Scott!! :)
    #5
  7. Sandip
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    Sandip Well-Known Member

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    [Mar 3, 2010]
    Check the hose with the red dots on it what goes to the dv :)
    [​IMG]
    #6
  8. Y83OLK
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    Y83OLK Hulk Smash!

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    [Mar 3, 2010]
    The hose you have pictured is off your pcv is it not?
    #7
  9. finesse
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    finesse Active Member VCDS Map User

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    [Mar 3, 2010]
    Thanks a million sandip


    Excuse my ignorance, what's the pcv.
    Please school me:sorry:
    #8
  10. rossbrownlee
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    rossbrownlee Ross_S4

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    [Mar 3, 2010]
    Look at the post from sandip, check out the black disc shaped object far right hand side about half way down, has the four rings on it. that is your pcv, it is to do with enigne head/crankcase ventilation.
    #9
  11. finesse
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    finesse Active Member VCDS Map User

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    [Mar 3, 2010]
    Fortunately or unfortunately that hose is not off the pcv
    #10
  12. Dani_B19
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    Dani_B19 Audi-sports own special child.

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    [Mar 3, 2010]
    Have you got a picture that is not so close up?
    #11
  13. Sandip
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    Sandip Well-Known Member

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    [Mar 3, 2010]
    The hose in the photo what's needs changing is from the breather to the air intake pipe, it's all part of the pcv system
    #12
  14. Y83OLK
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    Y83OLK Hulk Smash!

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    [Mar 3, 2010]
    oops, i thought the black round thing (in the top left of your pic) was the PCV (pressure control valve)
    #13
  15. OllieH
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    OllieH Member

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    [Mar 3, 2010]
    That is not the PCV. It is the PRV (Pressure Regulating Valve), or often referred to as the hockey puck. It is part of the PCV system however. It's job is to limit the airflow through it into the TIP (turbo intake pipe) when the turbo is boosting. i.e creating a vacuum in the TIP. Some info on it here:

    [​IMG]

    The T-piece in this picture is the PCV, and is basically a non return valve, which prevents boost pressure from escaping the manifold and entering the crankcase and PCV system.

    [​IMG]

    Sorry to hijack the thread, but I was in a similar situation to 'finesse' recently, and didn't know what things were, so thought this would help him. :icon_thumright:
    #14
  16. Sandip
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    Sandip Well-Known Member

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    [Mar 3, 2010]
    Nice find Ollie:)
    #15
  17. 1animal1
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    1animal1 The Clar!! it mouves!!! VCDS Map User

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    [Mar 3, 2010]
    was gna say that darn.....steel ma thunder Ollie :)
    #16
  18. OllieH
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    OllieH Member

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    [Mar 3, 2010]
    Found it whilst searching some of the other VAG forums. Someone else did all the hard work :)
    #17
  19. OllieH
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    OllieH Member

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    [Mar 3, 2010]
    :moa:
    #18
  20. finesse
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    finesse Active Member VCDS Map User

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    [Mar 4, 2010]
    It is of that, :faint::faint::faint:

    [​IMG]
    #19
  21. jesters3
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    jesters3 Active Member VCDS Map User

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    [Mar 4, 2010]
    #20
  22. finesse
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    finesse Active Member VCDS Map User

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    [Mar 4, 2010]
    thanks jester! what issues or errors came up when you had this problem?
    Last edited: Mar 4, 2010
    #21
  23. jesters3
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    jesters3 Active Member VCDS Map User

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    [Mar 4, 2010]
    Exactly the same error as you 17705, I changed the Pipe and it went however it came back. So I had another look about and found another split hose and replaced that. It went and now it is back again but IO haven't had time to sniff around the engine.

    In terms of issues; I didn't experience anything major no loss of power etc - just check your oil I did but it never needed filling up.

    Oh and when you change the clips on the hose have a couple of spare ones
    #22
  24. jesters3
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    jesters3 Active Member VCDS Map User

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    [Mar 4, 2010]
    One other thing - as you ahve found one split you will have a another one or two somewhere else. So when you get time have a good old rummage around all your hoses to make sure!
    #23
  25. finesse
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    finesse Active Member VCDS Map User

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    [Mar 4, 2010]
    thanks so much! Made my day.
    #24
  26. Dani_B19
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    Dani_B19 Audi-sports own special child.

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    [Mar 4, 2010]
    Least you've got an excuse to colour code your engine bay with some nice silicone or fit a oil catch can.
    #25
  27. finesse
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    finesse Active Member VCDS Map User

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    [Mar 4, 2010]
    Standard bay looks good enough :) Too old for mods :p
    #26
  28. Y83OLK
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    Y83OLK Hulk Smash!

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    [Mar 7, 2010]
    here you go buddy..
    Took some time to find, but as you so kindly requested via PM.

    [​IMG]
    #27
  29. Y83OLK
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    Y83OLK Hulk Smash!

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    [Mar 7, 2010]
    You need number 20.
    06a103817
    cost = 10.4 euros.
    #28
  30. finesse
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    finesse Active Member VCDS Map User

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    [Mar 7, 2010]
    thanks
    #29
  31. danger S3
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    danger S3 Member

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    [Sep 3, 2010]
    do you have any idea what the internal diameter of number 20 is as I was thinking of getting a bit of silicone hose for it instead of the oem one?
    #30
  32. s3tle
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    s3tle Member

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    [Sep 3, 2010]
    i have replaced it with 19mm id pipe, think the oem might be slightly smaller maybe 17/18mm id, but 19mm works perfectly well. It's about 250mm long
    #31
  33. s3tle
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    s3tle Member

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