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  1. #1
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    2.0 PD170 TDI Engine Noise

    Recently I have been getting a weird noise from the engine, mainly at low speeds or when changing gear, almost like wastegate noise I guess.

    I did consider it may be a sticky VNT mechansim but the car drives ok, I'm not getting the usual random power delivery or any overboost errors that I have had previously with VNT issues on other VAG cars.

    Anything else to check that could make a similar noise?

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  3. #2
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    you could possibly be right thinking sticky vnt , is it like a turbo flutter noise when you change gear ?

  4. #3
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    yeah it is a kind of flutter noise.

  5. #4
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    Wonder if this is possibly the cause of my noise - had the flashing coil fault light on today and limp mode with error code P0299 (Underboost)

    I had a poke around and came across a fault with the intake manifold swirl flap actuator - I connected a vacuum pump up to it and couldn't generate any vacuum so I assume the diaphragm is split.

    https://www.youtube.com/watch?v=DkPS...ature=youtu.be

    Might not be the problem but I shall report back after replacing.

 

 

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