JMB RetrofitsEM Tuning
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  1. #1
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    Power loss, poss boost problem?

    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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  3. #2
    arthurfuxake's Avatar
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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.
    53 A4 2.5TDi Quattro Sport 180 Tiptronic. Heated Buffalino leather, DVD Sat Nav RNS-E, TV, Bluetooth, 6 cd, BOSE, Colour DIS, Cruise Control, Auto lights and mirrors, Interior light pack, Heated mirrors.

  4. #3
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    I agree with arthur, get the codes scanned, similar symptoms on mine pointed to the MAF.
    Ingolstance Read about my A6 HERE.

  5. #4
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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

  6. #5
    technics100's Avatar
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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..


    2003 Silver A2 1.4 TDi - 65mpg & 30 a year to tax - ;-)
    2003 Atlas Grey A4 2.0 S-line - gone
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  7. #6
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    Quote Originally Posted by hodgy0_2 View Post
    and what does the "check" button do on the dashboard, will that not show the codes
    The "Check" button just performs a self test on things light bulbs and fluid levels.
    Ingolstance Read about my A6 HERE.

  8. #7
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    Quote Originally Posted by technics100 View Post
    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..

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

    do halfrauds do these leads?

  9. #8
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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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