what could this be? slow acceleration, no uuumph, no other symptoms

Discussion in 'Audi TDI forums' started by aoleks, Oct 19, 2017.

  1. aoleks

    aoleks New Member

    Joined:
    Aug 26, 2016
    Messages:
    21
    Car:
    Audi A4 B8 2008 2.0 TDI CR
    Location:
    London, UK
    audi a4 b8 2008 2.0tdi caga (143hp)

    alright, I just got another issue with my car... things never seem to end, I'm starting to consider another car. a brand that's not rubbish after 8 years...

    anyway, car drives super smooth (almost like a brand new one), fuel consumption is very good, no vibrations or noises. however, it seems like I'm driving an engine without a turbo. no engine malfunction light (will scan with VCDS later on today) but my acceleration is very sluggish. everything is linear and I barely get up to speed. feels more like an aspirated 1.2 engine. I'm guessing a shot turbo makes one hell of a noise, so I'm excluding that. it feels to me like there's no boost, but the symptoms of a wastegate stuck open are different, according to the internet.

    any clues what it might be? boost pressure sensor? N75? wastegate actuator?

    thanks
     

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