Chris NottEM Tuning
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  1. #1
    Gizmo20VT's Avatar
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    AFR not meeting requested

    Hey peeps

    I have attached a picture of AFR desired vs current, just want to know if there is anything else to check before replacing the wideband probe. I get the dreaded error of B1 S1 Malfunction in circuit at random times and rosstech has one answer, replace probe. When doing this log MY ESP light was flashing just as I entered 3rd gear (under 2300rpm) and it was like a throttle cut, had to close the throttle twice and then WOT, only then did my RPM increase and could proceed to log. Maf G/S increases and seems correct for what Im running.


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  3. #2
    RIP S3dave

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    I would presume block 001 is functioning on lambda adjust? or does it drop to zero at this moment it see's malfunction in circuit?
    OR
    Fuel pressure is dropping, and 001 block would be climbing +ve trying to hold requested fueling. to its max of 26%

    fuel pressure check to confirm if its fuel pressure which is dropping off under boost.. It should be 3bar +boost fuel pressure.

    throttle cut is something else occuring as well...
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  4. #3
    Gizmo20VT's Avatar
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    I havent checked block 001 as yet but after the log going into block 32 the part adaption is at 0% which is wasnt when it was meeting target last week, became intermittent and now constant... Would I spot anything block 001 related in my Log produced with ME 7 logger?

    I have been asking a few of my mates if they have a fuel pressure gauge for me to test with but no luck, will look into purchasing one today then.

    Edit: Would a dirty fuel filter perhaps cause this?
    Last edited by Gizmo20VT; 13th December 2012 at 10:40.

  5. #4
    RIP S3dave

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    if 001 goes've positive a lot its trying to get to the tgt fuel... so if it cant you will need to physically check pressure
    if lambda adaption on 001 stays at zero its not working
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  6. #5
    Gizmo20VT's Avatar
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    Quote Originally Posted by badger5 View Post
    if 001 goes've positive a lot its trying to get to the tgt fuel... so if it cant you will need to physically check pressure
    if lambda adaption on 001 stays at zero its not working
    Lets go log and see :D

  7. #6
    Gizmo20VT's Avatar
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    Did a log this morning quick, it seems when the "throttle cut" in low rpm occurs the lambda value hits 0 as if its not responding, this is when my ESP light flashes aswell. However it is responding in higher RPM but not sure if the values are correct. I have checked the wiring on both plugs and they are still in good condition. Would you suspect the probe to be faulty? Log was block 001
    TIME
    Marker STAMP /min °C %
    1360 90 5.5 101011
    0.38 1400 90 0 101011
    0.8 1440 90 2.3 101011
    1.31 1520 90 -1.6 101011
    1.7 1560 90 4.7 101011
    2.09 1520 90 -0.8 101011
    2.49 1600 90 0.8 101011
    2.91 1560 90 -1.6 101011
    3.31 1520 90 -3.9 101011
    3.71 1480 90 0 100011
    4.13 1600 90 0 100011
    4.62 1360 90 0.8 100011
    5.13 1400 90 6.3 100011
    5.53 1360 90 1.6 101011
    6.03 1880 90 0 110011
    6.53 1880 90 0 100011
    6.94 1760 90 0.8 100011
    7.34 1840 90 0 101011
    7.74 1880 90 0 100011
    8.14 1880 90 0 100011
    8.54 1840 90 0 100011
    9.05 1800 90 0 100011
    9.45 1920 90 1.6 110111
    9.84 2080 90 3.9 100001
    10.25 3800 90 3.9 100001
    10.65 3360 90 7 100001
    11.07 1840 90 0 100011
    11.57 1840 90 6.3 100011
    12.06 2000 90 9.4 101001
    12.48 2160 90 0.8 101001
    12.97 2320 90 3.1 101001
    13.47 2400 90 0 101001
    13.98 2080 90 0 100101
    14.36 1880 90 17.2 100011
    14.78 1760 90 7.8 100011
    15.18 1800 90 7 101011
    15.69 1880 90 4.7 101011
    16.09 1960 90 4.7 101011
    16.49 2040 90 0.8 101001
    16.89 2080 90 3.1 101001
    17.29 2160 90 0.8 101001
    17.69 2240 90 3.9 101001
    18.11 2320 90 4.7 101001
    18.51 2440 90 5.5 101001
    18.91 2520 90 3.9 101001
    19.4 2640 90 2.3 101001
    19.8 2720 90 2.3 101001
    20.22 2800 90 2.3 101001
    20.72 2960 90 3.9 101001
    21.12 3040 90 4.7 101001
    21.52 3160 90 6.3 101001
    21.93 3280 90 6.3 101001
    22.43 3440 90 5.5 101001
    22.92 3640 90 6.3 101001
    23.34 3800 90 6.3 101001
    23.84 4000 90 7.8 101001
    24.24 4160 90 10.2 101001
    24.64 4360 90 11.7 101001
    25.04 4560 90 13.3 101001
    25.45 4800 90 18 1101001
    25.95 5120 90 20.3 1101001
    26.35 5400 90 20.3 1101001
    26.75 5640 90 20.3 1101001
    27.15 5880 90 20.3 1101001
    27.56 6120 90 20.3 1101001
    27.96 6360 90 20.3 1101001
    28.38 6560 90 20.3 1101001
    Last edited by Gizmo20VT; 15th December 2012 at 08:39.

  8. #7
    RIP S3dave

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    its wanting to add 20% more fuel from 5krpm
    logging 001 and 031 and 118 will show fueling, in relation to boost
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  9. #8
    Gizmo20VT's Avatar
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    Just a thread update, I did a fuel pressure test today and under load (1 bar boost and up) the fuel pump cant deliver, it peaks at 3.8 bar but no more. Will be replacing soon, car is standing again :D

  10. #9
    RIP S3dave

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    as expected,.

    thanks for confirming
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    **NEW** Badger5 Section CLICK here>> http://www.audi-sport.net/vb/213-badger-5/

 

 

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