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A3 2.0 TFSI Loosing boost.

jhnlaw4 May 27, 2013

  1. jhnlaw4

    jhnlaw4 New Member

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    Hello,

    I need some advice please.

    Twice my car has lost all boost when driving and it feels like a slug. There are no warning lights on the dash. The first time I just switched it off and back on and it fixed the problem. The second time I checked with Torque on the phone, connected via the ODB and it showed no error codes, again no lights on the dash. Again turning off and back on fixed the issue.

    Obviously with no error codes, I dont know where to even start looking.

    Its a 2006 model, 2.0 TFSI Quattro thats been remapped by Celtic, other than that its standard.

    Any suggestions would be greatly appreciated.

    PS. How do I get hold of VAGCOM?

    Thanks

    John
     
  2. Turbo jay

    Turbo jay Leather repair specialist

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    Classic sign of a knackered diverter valve that's where I would start. you can get the rev d diverter valve from Tps for £50 ish. Easy swap did mine a few months ago same car.
     
  3. NHN

    NHN Retrofitter - Audi - VW - Skoda - Seat Site Sponsor VCDS Map User

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    From me if interested :)

    PM for more info.
     
  4. MrLapou

    MrLapou Well-Known Member

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    If DV has split, then I'd doubt engine would run ok after a rest.
    Disconnect the MAF sensor and see it that makes a difference.
    If it doesn't, could be it's iffy...
     
  5. jhnlaw4

    jhnlaw4 New Member

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    Thanks Turbo Jay, I was told that if it was the DV, you'd most likely hear a wooshing sound in the drivers foot well of the car, is that correct?
     
  6. jhnlaw4

    jhnlaw4 New Member

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    Thanks MrLapou, I'll try that the next time it happens, unfortunately it may be a few weeks before I see the problem again.
     

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