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

    Aug 26, 2016
    Audi A4 B8 2008 2.0 TDI CR
    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?


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