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NO boost in first on start up !

Discussion in 'A4/A4 cabriolet/S4 forum(B6 chassis)' started by dale86, Jul 27, 2013.

  1. dale86
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    dale86 Member

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    [Jul 27, 2013]
    Hi all sometimes when I first start my car it has no boost in first gear then when you hit second it seems fine and after you get going it doesnt reappear until the next day or so its a 1.9tdi 130. Could this be sticky turbo vanes ?
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  3. deano1978
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    deano1978 different gear

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    [Jul 27, 2013]
    I'd give the mr muscle a go for starters.
    There is a how to around here somewhere,
    #2
  4. dale86
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    dale86 Member

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    [Jul 28, 2013]
    Yeah im defo gona give that a go but I was wondering if it could possibly be a boost leak too ?
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  5. SL11CKK
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    SL11CKK Active Member

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    [Jul 28, 2013]
    Check your vacuum pipes. Check the black and white one way valve on the vacuum pipes. See if your N75 is working.

    Most importantly plug the computer in and see whats its trying to tell you.
    #4
  6. dale86
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    dale86 Member

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    [Jul 28, 2013]
    Ok will do thanks for the reply are the vac pipes on the drivera side as I have been getting a loud hissing noise which continues a bit after the car is turned off from under the bonnet on the drivers side up near the airbox.
    #5
  7. AlexGSi2000
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    AlexGSi2000 Well-Known Member VCDS Map User

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    [Jul 30, 2013]
    Is this not a safety feature to help look after the turbo when the engine is cold?
    On my Ibiza Cupra, the engine prevented boost for about a minute after start-up.

    The hissing sound from the drivers area may be your air-conditioning - mine does the same.
    #6

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