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A4 1.9 TDI (90 BHP) - !997 power problem.

agoodwin Jan 17, 2006

  1. agoodwin

    agoodwin New Member

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    Help would be appreciated. Initial problem was no turbo. Turbo and inlet manifold stripped,decoked etc.EGR valve changed.
    Turbo now working ( although not as impressive as before.)in lower speed range but no acceleration or speed increase beyond 70 m.p.h. I notice that turbo gate valve rod not moving despite high revs.
    MAF changed at onset of problem but of course made no difference.
    Any ideas please ???
     
  2. fjtwelve

    fjtwelve Moderator Staff Member Moderator

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    I have read but not personally sorted out that there is a thin hose from the exhaust near the turbo to the ECU, and 90 / 110hp TDIs suffer from a power loss over 3000 rpm if this hose is knackered. If replacing this works please let me know because my wife is reporting similar symptoms on her P reg A4 90hp, but i haven't had time to fiddle yet.
     
  3. agoodwin

    agoodwin New Member

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    Many thanks for that - will check it out and let you know. Your wife's car is about the same vintage as mine.

    Best wishes.
     

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