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  1. #1
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    1.9tdi 110 hesitation

    Hi guys. Recently purchased a 1998 a4 1.9tdi avant. Since owning it ive serviced it changing the engine oil and filter, fuel filter, air filter, glow plugs, coolant, water pump and can and aux belts. The car has run fine since but within the last week I've noticed the engine is intermittently hesitant. If I accelerate gently I can hear it come on boost and then all of a sudden it stops. Almost like I've lifted my foot off the accelerator. If I back off the throttle then reapply it goes on to drive as it should. I'm not very good at explaining this issue so hope some of you may understand what I'm getting at and hopefully have some ideas as to where to start llooking thanks in advance
    Dave

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  3. #2
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    Double Dark Side! Diesel & 8P

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    1.9tdi 110 hesitation

    Could it be the infamous sticking variable veined turbo? I know the turbos on the old 1.9TDIs suffer from it as my mates Bora was the same. There are guides on the net for cleaning it using Mr Muscle oven cleaner. Might be worth a look.
    8P A3 TDI - 220bhp - 335lbft
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  4. #3
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    Westicles speaks the truth. It will be VNT related,

    Scott will be along shortly, he is the resident Derv fella.

  5. #4
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    If you want it scanned i can do it. Im not far from you.

  6. #5
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    Double Dark Side! Diesel & 8P

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    1.9tdi 110 hesitation

    Quote Originally Posted by Byzan Pics View Post
    Westicles speaks the truth. It will be VNT related,

    Scott will be along shortly, he is the resident Derv fella.
    I'm starting to read up on the 1.9 TDI engine now as I'm looking to buy one next year. The VNT issue is the most common fault I know of on these engines.
    8P A3 TDI - 220bhp - 335lbft
    A3 Maintenance Thread
    Bye bye S3 you will be missed.
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  7. #6
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    Thanks guys. At least I know where to start now. I'd appreciate it if you could gen.heinz guderian. I'm in London until Friday night but could pop over Saturday morning if that's ok?

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    yes thats fine i will pm you my address.

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    Meant to mention it has the afn engine in it in case that makes a difference

 

 

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