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Thread: Audi A3 1.6 8p 2011: Vibration and loss of power

  1. #1
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    Unhappy Audi A3 1.6 8p 2011: Vibration and loss of power

    Hello,

    I'm new in this forum. I have Audi A3 1.6 8p model 2011.
    I had frequently a problem with injectors, I replaced till now 3. The symptoms were loss of power, vibration at idle and noise during acceleration.
    The last weekend, I updated the software of the ECU engine from 5xxx to 9978. After that I did an adaption of injectors. At the end of adaptation, I tested my car and all previous symptoms are gone. Two hours later, I tested it on a high way and suddenly 2 lamps are set in my dashboard, engine management lamp which was blinking and Emission control lamp. Afterwards, I stopped immediately my car and I tried to start it again, then a vibration on my engine was begun. By diagnosing My ECU engine, I noticed a logged dtc related to flow meter where the signal is too high and no failure on my injectors:

    Code:
    Removed.  Data from a clone/pirate copy of VCDS is not welcome here.
    So in order to confirm that my flow meter is bad, I unplugged it and I started my car, at idle the gauge of rotation speed was not stable, it was moving between 800 and 950 tr/min. After that I run, I noticed really a smooth acceleration with a loss of power.

    After that I plugged again and I recorded the values gotten from flow meter :
    The test was done between 900 and 1200 tr/min.
    Code:
    Removed.  Data from a clone/pirate copy of VCDS is not welcome here.
    By the way, I checked the air filter, It's clean. I replaced the gasoline filter, I emptied the Tank and I Cleaned it.
    What can be the cause in your opinion?

    Thanks in advance for any help you can provide!
    Last edited by Uwe; 10-24-2018 at 10:56 AM.

  2. #2
    Verified VCDS User iichel's Avatar
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    I can't read french that well, but it seems like it's complaining about the MAF sensor.
    Could you perhaps install an english version of VCDS next to your French version, to see what's what? It will happily co-exist next to your French version.

  3. #3
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    Thanks for your quick answer. Find below the translated info:

    Code:
    Removed.  Data from a clone/pirate copy of VCDS is not welcome here.
    Last edited by Uwe; 10-24-2018 at 10:56 AM.

  4. #4
    Verified VCDS User iichel's Avatar
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    Well that's clear I guess. Check the MAF sensor and its wiring...

  5. #5
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    Quote Originally Posted by iichel View Post
    Well that's clear I guess. Check the MAF sensor and its wiring...
    The wiring is OK, but for the MAF, as I described in the #1 post, When the MAF is unplugged the performance of the Engine decreased and the gauge of rotation speed was not stable. That means for me it's working fine. Correct?
    What are the nominal values of a good MAF?
    Do you have any suspicion about the EGR? no?

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    Any idea?
    Thanks

  7. #7
    Benevolent Dictator Uwe's Avatar
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