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Power loss, poss boost problem?

hodgy0_2 Jul 9, 2009

  1. hodgy0_2

    hodgy0_2 Member

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    Hi guys

    first post so bare with me!

    I have a 2.5TDI quattro (see pics)

    in the main, very pleased with it

    but it seems to really lose all power, only sometimes though, at first i just though i was catching it "off boost", or some sort of niggle with the tiptronic system -- but its not that, its almost like the turbo suddenly vents to air, with my foot flat on the floor, nothing (the rev needle sits at 3k) as I let my foot off, the urge comes back

    other than that it drives superbly -- any ideas

    thnks - hodgy






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  2. arthurfuxake

    arthurfuxake Controversial & Contradictive

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    I'd get it checked on Vag-com for any error codes, sounds like a stuck egr valve. All error codes are stored, so befriend someone on here with vag-com.
     
  3. quattrojames

    quattrojames Moderator Staff Member Moderator Audi A6 Audi Avant Owner Group

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    :sign_welcome:

    I agree with arthur, get the codes scanned, similar symptoms on mine pointed to the MAF.
     
  4. hodgy0_2

    hodgy0_2 Member

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    cool thanks guys

    so next question is - does anyone know a Vagcom guy in the Cambridge area, maybe a mobile guy


    and what does the "check" button do on the dashboard, will that not show the codes

    Cheers
     
  5. technics100

    technics100 Member

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    Check button will not show codes. Someone should be able to help you or else you can buy a lead from ebay for £15 and download a shareware version of the software to read codes..
     
  6. quattrojames

    quattrojames Moderator Staff Member Moderator Audi A6 Audi Avant Owner Group

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    The "Check" button just performs a self test on things light bulbs and fluid levels.
     
  7. hodgy0_2

    hodgy0_2 Member

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    have you link to the shareware version, and is the lead a standard ODB11 one

    do halfrauds do these leads?
     
  8. hodgy0_2

    hodgy0_2 Member

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    ok apologies I,ve got the shareware

    but in the meantime took it to my local garage who put it on a "vagcom" type thingy

    the codes are 00542 shock sensor nozzle needle g-80 -----

    00575 Manifold absolute pressure control limit exceeded - intermittent

    01375 Engine mounting valve step -----

    17978 - Engine ECU Blocked P1570

    all the codes cleared apart the first one

    I am thinking that the 00575 one could mean its overboosting, hence the feeling of no boost as it just shuts the turbo off

    any thoughts
     

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