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Thread: Audi A4 2.0 tdi shaking at idle upon start

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  1. Audi A4 2.0 tdi shaking at idle upon start 
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    My a4 2010 2.0 tdi s line has started to shake quite violently when starting it up.
    The Rev pin bounces up n down shaking the car when in neutral and even when I'm changing gear. The mpg drops significantly while idle also but gets back upto around 40mpg when driven. It feels like the car is pushing too much diesel into the engine and its choking or maybe not getting enough.
    The car has over 100k on gets serviced regularly. Due a timing belt now but this happened 6 months ago.
    I brougt it into audi they done all the checks fuel test, fuel pressure, wire looms and whatever else they done.
    They had the car for 3 days. Anyway the fixed the juddering telling me they just reset all the timing. Now the problem is back so Iv taken IT to a local mechanic who seems to think it's the fuel pressure regulator sensor.
    Its going in tomorrow so see if that's the problem. He doesn't want to change can belt until this problem is fixed 1st.

    Has as anyone had this problem before. It's quite annoying
     
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  2. Re: Audi A4 2.0 tdi shaking at idle upon start 
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    so car went in yesterday to audi they checked all the usual fuel supply, pressure, fuel lines etc.......... all ok.
    they said 2 solenoid valves where worn but still working. having said this they are going to put new ones in free of charge to see how the car reacts
    to them. hopefully this solves the rough idle.
    Again if any one has previously had this problem can you shed some light on your experience and how it was fixed.
    thanks
     
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  3. Re: Audi A4 2.0 tdi shaking at idle upon start 
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    Audi sorted the car. Worn solenoid valves was the diagnosis. Replaced for free which was great along with a massive discount on a new cam belt. Car running well now. Let's see how it gets on.
     
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  4. Re: Audi A4 2.0 tdi shaking at idle upon start 
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    Hi Guys
    I wonder if someone could help me, I have an A4 Audi 2.0TDI 2008. My car recently has developed a shaking when pulling away , I had it looked as the same time the flywheel needed doing. I got the flywheel done which has reduced the shaking but its still there. I had it plugged in at a friends garage and i had fault telling me that the turbo was overboosting, the car is feeling very sluggish and the engine does not sound smooth. I'm thinking I may have an injector out hence why the engine maybe working harder and putting turbo under pressure casuing engine to shake. Any ideas as I dont want to just renew a turbo and work my way through the injectors to find the shaking is still there?

    Thanks for your help in advance.

    Adam
     
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