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Thread: 2002 Bora 1,6L AZD-Engine takes 12-15 L / 100km :(

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  1. #1
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    2002 Bora 1,6L AZD-Engine takes 12-15 L / 100km :(

    This little Bora is drinking a little to much for the Owner.

    So he shot the Parts Canon at it
    - Full Inspection with Oil Change
    - New Fuel Filter
    - New EGR Valve
    - New Coils and Spark Plugs
    - New Front & Rear O2-Sensor
    - New Theromastat and Coolant Temp-Sensor
    - New Intake Airtemp & Pressure Sensor
    - New Belts , Pulleys and Tensioners + 3 times Timing Checked.

    Then he ran out of Ideas and gave me a Call if i would take a look.

    After First Look, i Cleaned and relearned the Throttle Body and gave the ECU a Software Update.

    Then took the Car for a Spin to look what it does or not.
    It starts, it drives (even +- 5 km/h from top Speed it should have ) and idles stable.

    First i noticed 3 Things :
    - Misfire Counter NEVER goes "Active" - always Disabled, but can´t feel it misfiring.
    - Long Term in MWB 032 ALWAYS stays at 0,0% in Both fields.
    - Fuel Trim in MWB 1 is at ABOUT 0 % (plus/minus 4 %) - didin´t look bad - 7% at most on full Accel.

    But i couldn ´t get the Car under 10 L / 100km even with 1-10% Throttle Pedal
    "Normal" Driving results in what he said in my Case 14,3 Liter/100km.
    After the Test Drive i got a Error in VCDS, so lets look what and at OBD Data and HERE it gets "strange".

    OBD Long term at - 70% ??? And i can´t get it away - Update , Battery-Off, ADP 00 - no Change !
    But MWB 32 in VCDS tells and stays at 0,0 % ?!
    In OBD-II i get a P0171 and in VW-Mode i get a P1152.

    Both Codes say System has NOT ENOUGH Fuel - but the Car is Taking Fuel as if its a W8
    And both O2 go to 800-900mV at WOT.Idle and driving front one is switching from 100-850mV.

    After that i called him and, yes , the VCDS-Code P1152 and sometimes a CAT-Code was there since
    he started having this Problem and still is

    I then tested Fuel Pressure and it´s 2,7bar and goes to 3,1bar at WOT.
    Fuel is from Shell and he even tryed 100 Octan, without Difference.

    Code:
    VCDS Version: DRV 19.6.2.1  HEX-V2 CB: 0.4513.4
    Datenstand: 20191020 DS308.0
    www.Ross-Tech.de
    
    Händler-/Werkstattname: Chrisi
    Betriebsnummer: 123 12345 012345
    
    Fahrzeug-Ident.-Nr.: WVWZZZ1JZ2W025348   KFZ-Kennzeichen: BORA
    Kilometerstand: 199640km   Reparaturauftrag: 
    
    
    
    --------------------------------------------------------------------------------
    --------------------------------------------------------------------------------
    
    
    Fahrzeugtyp: 1J (1J - VW Golf/Bora IV (1998 > 2006))
    Scan: 01 02 03 08 15 16 17 19 22 29 35 36 37 39 46 47 55 56 57 75
              76
     
    Fahrzeug-Ident.-Nr.: WVWZZZ1JZ2W025348   Kilometerstand: 199640km
    -------------------------------------------------------------------------------
    Adresse 01: Motorelektronik        Labeldatei: DRV\036-906-034-AZD.clb
       Teilenummer: 036 906 034 CN
       Bauteil:  MARELLI 4MV        5164  
       Codierung: 00031
       Betriebsnr.: WSC 00000  
       VCID: 609AAAEFD3558C47A96-4B5C
       WVWZZZ1JZ2W025348     VWZ7Z0A3676358
    
    Kein(e) Fehlercode(s) gefunden.
    Readiness: 1010 0101
    
    -------------------------------------------------------------------------------
    Adresse 03: Bremsenelektronik        Labeldatei: DRV\1C0-907-37x-ESP-F.lbl
       Teilenummer: 1C0 907 379 E
       Bauteil: ESP FRONT MK60      0104  
       Codierung: 0011266
       Betriebsnr.: WSC 01317 785 00200
       VCID: 2C020EDFEA1D182745E-5184
    
    Kein(e) Fehlercode(s) gefunden.
    
    -------------------------------------------------------------------------------
    Adresse 15: Airbag        Labeldatei: DRV\6Q0-909-605-VW5.lbl
       Teilenummer: 1C0 909 605 A
       Bauteil: 27 AIRBAG VW51 01     01  
       Codierung: 12855
       Betriebsnr.: WSC 01317  
       VCID: 221EE0E79DD9DE57FF2-4B3C
    
    Kein(e) Fehlercode(s) gefunden.
    
    -------------------------------------------------------------------------------
    Adresse 17: Schalttafeleinsatz        Labeldatei: DRV\1J0-920-xx5-17.lbl
       Teilenummer: 1J5 920 826 A
       Bauteil: KOMBI+WEGFAHRSP VDO V02  
       Codierung: 05113
       Betriebsnr.: WSC 00000  
       VCID: 2C020EDFEF1D182745E-513C
       WVWZZZ1JZ2W025348     VWZ7Z0A3676358
    
    Kein(e) Fehlercode(s) gefunden.
    
    -------------------------------------------------------------------------------
    Adresse 19: Diagnoseinterface        Labeldatei: DRV\6N0-909-901-19.lbl
       Teilenummer: 6N0 909 901 
       Bauteil: Gateway K<->CAN    0001  
       Codierung: 00006
       Betriebsnr.: WSC 01317  
       VCID: 70BADAAF03B53CC7396-5160
    
    Kein(e) Fehlercode(s) gefunden.
    
    -------------------------------------------------------------------------------
    Adresse 46: Komfortsystem        Labeldatei: DRV\1C0-959-799.lbl
       Teilenummer: 1C0 959 799 B
       Bauteil: 18 Komfortgerát HLO 0003  
       Codierung: 00259
       Betriebsnr.: WSC 01317  
       VCID: 36362CB7215152F723A-4B1E
    
       Subsystem 1 - Teilenummer: 1C1959801A
       Bauteil: 18 Tõrsteuer.FS KLO 0003  
    
       Subsystem 2 - Teilenummer: 1C1959802A
       Bauteil: 18 Tõrsteuer.BF KLO 0002  
    
       Subsystem 3 - Teilenummer: 1C0959811A
       Bauteil: 18 Tõrsteuer.HL KLO 0001  
    
       Subsystem 4 - Teilenummer: 1C0959812A
       Bauteil: 18 Tõrsteuer.HR KLO 0002  
    
    Kein(e) Fehlercode(s) gefunden.
    
    Ende--------(Dauer: 05:04, Batt.-Spannung Start/Ende: 14.4V/14.2V)---------
    Good Ideas ? ECU gone Mad ?
    Attached Images Attached Images
    Last edited by vagtuning; 01-27-2020 at 12:04 PM.
    ** If you can´t fix it - Don´t break it ! **

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