Rough idle and vibrations

Discussion in 'Ross Tech VCDS forum' started by pzmaria, Dec 30, 2014.

  1. pzmaria

    pzmaria New Member

    Joined:
    Aug 22, 2011
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    Car:
    2009 Jetta tdi
    Some time ago noticed quite a rough idle on my MK5 Jetta TDI. Decided to run some measuring blocks with VCDS but I'm not sure how to interpret them.
    Just to be on the same page, about 2 years ago DPF has been deleted. EGR system is still there. When I push it hard you can see some smoke but I think it's normal.
    Another think I've noticed is kind of nitrogen smell just after cold engine start. The smell disappears quickly after a minute or so. Any ideas to solve this puzzle??
    Attached are two screenshots from VCDS. Thanks so much for your input.
    pzmaria.
     

    Attached Files:

  2. 1texansfan1

    1texansfan1 Member

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    2014 Passat TDI SEL w DSG 2005 Jetta GLI 1.8T auto w triptronic
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    I am interested in why the injection deviations mean. Someday I want the VCDS . have you ran it when cold and warm??
     
  3. audi1z

    audi1z Member

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    From the screenshots I see no problems. Btw, nitrogen does not smell. You breathe it, all your life.
    Cheers
     
  4. pzmaria

    pzmaria New Member

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    You're absolutely right with nitrogen. What I meant was a strange smell that was never before there and it goes away within a minute or so.
    I can smell it in the cabin. Just wondering if an exhaust flap is stuck. Thanks.
     
  5. Poormanq45

    Poormanq45 Member

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    2006 Jetta BRM 2005 Jetta BEW
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    The pictures you've posted look pretty much perfect.

    When was the last time the fuel filter and air filter were changed?

    Are there any other symptoms?

    I'm leaning towards motor mounts on this one.
     
  6. pzmaria

    pzmaria New Member

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    2009 Jetta tdi
     
  7. 1texansfan1

    1texansfan1 Member

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    Car:
    2014 Passat TDI SEL w DSG 2005 Jetta GLI 1.8T auto w triptronic
    Location:
    San Antonio Texas
    I did see that - that is exactly why I asked if tested at cold temp startup.
     

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