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S3 Hesitation / surging issues

Discussion in 'A3/S3 Forum (8L Chassis)' started by mattyboy199, Mar 19, 2013.

  1. mattyboy199

    mattyboy199 Active Member

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    I recently replaced my plugs due to hesitation / surging issues & initially all was good however in higher gears 3rd + it has re-occurred. Today the EML light was flashing I haven't scanned it but I am already aware of the lambda sensor number 2 being faulty, this hasn't affected MPG & I do not believe there causes any adjustment in the fuelling made by the ECU. When I previously removed the lambda sensor it was black & easily wiped clean my intension was to cure the hesitation issue then clean up the lambda probe however i'm at a bit of a dead end. The coil pack wiring loom is all good the only thing which springs to mind is coil packs & although their 50k old they look in good condition (not cooked / tarnished).

    Anyone else had this problem ? i'm concerned it could be a turbo issue.

    Regards


    Matt
     
  2. mattyboy199

    mattyboy199 Active Member

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    I'm planning to do some VCDS logging today so hopefully this will highlight the issue.
     
  3. Paradox1

    Paradox1 Active Member

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    possibly a boost leak?
     
  4. mattyboy199

    mattyboy199 Active Member

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    hmmm...this says coil packs to me, the 17526 & 17522 are related (lambda) not sure about the 17705...

    Gonna switch over coils 3 & 4 with 1 & 2.

    VCDS-Lite Version: Release 1.2
    Wednesday, 20 March 2013, 18:53:55.


    Chassis Type: 8L - Audi A3/S3
    Scan: 01,02,03,08,15,16,17,22,35,37,45,55,56,57,75,76

    -------------------------------------------------------------------------------
    Address 01: Engine Labels: Redir Fail!
    Controller: 8N0 906 018 BH
    Component: 1.8L R4/5VT 01 0001
    Coding: 10710
    Shop #: WSC 00000

    7 Faults Found:
    17526 - Oxygen (Lambda) Sensor Heating; B1 S2: Open Circuit
    P1118 - 35-00 - -
    16684 - Shareware Version. To Decode all DTCs
    P0300 - 35-10 - Please Register/Activate - Intermittent
    16685 - Shareware Version. To Decode all DTCs
    P0301 - 35-10 - Please Register/Activate - Intermittent
    16688 - Cylinder 4: Misfire Detected
    P0304 - 35-10 - - - Intermittent
    17522 - Shareware Version. To Decode all DTCs
    P1114 - 35-00 - Please Register/Activate
    17705 - Shareware Version. To Decode all DTCs
    P1297 - 35-10 - Please Register/Activate - Intermittent
    16687 - Cylinder 3: Misfire Detected
    P0303 - 35-10 - - - Intermittent
    Readiness: 0010 0001

    -------------------------------------------------------------------------------
    Address 03: ABS Brakes Labels: None
    Controller: 8N0 907 379 E
    Component: ESP 20 CAN V005
    Coding: 18448
    Shop #: WSC 01236
    VCID: 3E0FBDFB296F
    No fault code found.


    Coding: 18448
    Shop #: WSC 01236
    VCID: 3E0FBDFB296F
    No fault code found.
     
  5. mattyboy199

    mattyboy199 Active Member

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    Coils switch last night, faults codes found below.


    16684 Random/Multiple Cylinder Misfire Detected
    16685 Cylinder 1: Misfire Detected

    Cylinder 1 has coil 3 in it, this makes sense to misfire. What I don't understand is why cylinder 2 (previously coil 4) & 3 (previously coil 1) have not misfired.

    I need help please guys !
     
  6. mattyboy199

    mattyboy199 Active Member

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    As suspected 4 x new TFSI coil packs cured this problem HAPPY TIMES !
     

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