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loss of power

  1. Loss of power, check engine light on

    VW Mk6 Golf, Jetta, Beetle, Sportwagen TDI forum
    Hi all, This may sound a bit vague, but I was wondering if anyone could give me a few ideas what my problem may be. Over the past 500 kms of driving, my trusty TDi (1.9) Golf, it has decided to derate on occasion. When this occurs, I feel a sudden loss of power and the maximum fuel delivery is...