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  1. #1
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    Turbo problem\'s or Mass Air Meter?

    Hi all, I'm experiencing problems with my 2.5 TDi A6. Car loses power above 3K rpm, feel's like I don't have a turbo anymore. I've put a Snap On diagnostic M/C on it and have no fault codes. I've swapped my Air Box top (Mass Air Meter I believe) with my Father In Law's motor and had no difference. Only thing I can find is that barometric pressure in the inlet manifold peaked at 1,499 milibars, I believe this should be around 2000 milibars. To me this point's me towards my turbo charger however I'm loath to pay out for a new turbo without being certain that there is a turbo fault. I had a look at my turbine and it spins freely with no end float so all should be ok unless there is a problem with the waste gate.

    Has anybody had similar problems?

    Do you have any suggestions on where to obtain information or how to pin down a diagnostic?

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  3. #2
    bravepilot's Avatar
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    Re: Turbo problem\'s or Mass Air Meter?

    Wow... impressive terminology... I don't understand a word of it though, perhaps you have just got some of your fluff stuck in your turbo Mr Bunny? [img]/ubbthreads/images/graemlins/lol.gif[/img]

    [eratum: apologies for the bad joke... I'm having an off day]

  4. #3
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    Re: Turbo problem\'s or Mass Air Meter?

    hahaha

  5. #4
    imported_kris_tdi
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    Re: Turbo problem\'s or Mass Air Meter?

    the MAF has a plug coming out of it, its not actually attached too the airbox, only by a jubilee clip.
    is yours the di or cr version?

  6. #5
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    Re: Turbo problem\'s or Mass Air Meter?

    Mines a 1995 2.5 a6 tdi and i got the same problem - it used to boost from 2500 to 4500 rpm, but now theres no boost and just revs slugish, im trying to locate the boost valve regulator and wastgate to investigate them .

  7. #6
    Rev-head's Avatar
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    Re: Turbo problem\'s or Mass Air Meter?


    http://forums.tdiclub.com/showthread.php?t=60705

    This is the b all of all knowledge when it comes to TDI engines ...i have just spent the last 2 hours reading a mass of information recomend it to all owners of TDI motors

    [img]/ubbthreads/images/graemlins/beerchug.gif[/img]

  8. #7
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    Re: Turbo problem\'s or Mass Air Meter?

    that link is invalid, but i know the site

  9. #8
    Rev-head's Avatar
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    Re: Turbo problem\'s or Mass Air Meter?

    sorry you must be registered it to open i think

    http://forums.tdiclub.com/index.php

    Go to the how to page

  10. #9
    Rev-head's Avatar
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    Re: Turbo problem\'s or Mass Air Meter?

    [ QUOTE ]
    Wow... impressive terminology... I don't understand a word of it though, perhaps you have just got some of your fluff stuck in your turbo Mr Bunny? [img]/ubbthreads/images/graemlins/lol.gif[/img]

    [eratum: apologies for the bad joke... I'm having an off day]

    [/ QUOTE ]



    Fluff stuck in your turbo do you work for Kwik fit............... [img]/ubbthreads/images/graemlins/laugh_roll.gif[/img] [img]/ubbthreads/images/graemlins/laugh_roll.gif[/img]

  11. #10
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    Re: Turbo problem\'s or Mass Air Meter?

    sounds like the problems I'm having with my A3 1.9TDI 110 - the turbo has vaes have caked up with a mixture of soot/oil (leaking from the 'wet side' of the turbo due to bearing wear) - the vanes stick open causing over-boost, which results in the ECU shutting the turbo down. However I had a fault code.

    Save yourself time and worry and just get your local dealer to carry out a full diagnostic - they can work all components of the turbo system and diagnose the fault.

    If you want more help send me a message!

 

 

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