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Thread: misfire on 1.8

  1. #1
    Regular Member Lozza's Avatar
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    Vehicle : Vectra c

    Trim : SRI

    Engine : 1.8

    Year : 06

    Default misfire on 1.8

    hi... ive had a slight misfire on my car now for a while, its the 2003 1.8 16v . Today i popped out to the shop, when i got back into the car i could feel the misfire has got alot worst to the point its jumping. I sevice my car every year (all vauxhall parts). A while back i tryed a different coil pack off a pals veccy that is fine, to see if it was the problem, but there was no diff.... BTW sometimes when i go to start the car (HOT or COLD) it just dies then when i start again its fine... can anyone throw any ideas to what could be causing this misfire please.

    Regards Loz

  2. #2
    Regular Member Envy's Avatar
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    Vehicle : Vectra C

    Trim : SRi Nav

    Engine : 1.8 VVT

    Year : 2006

    Mileage : 130k

    Default

    Hello Mate

    I had fairly same symptoms as to what your having but mine was fixed once the spark plugs were changed and a second hand coilpack put in.

    I was advised to look at the below items as to the cause before this was repaired.

    Fuel Filter needs replacing
    Fuel pump failing
    MAF Sensor failing/failed
    Each Lambda sensors could be failing/failed
    Check Alternator. Multimeter across battery terminals should be showing a healthy 14 volts or slightly more

    Any chance you can get it onto a code reader to see what comes up?

  3. #3
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    Vehicle : vectra c

    Trim : ls

    Engine : 1800

    Year : 2004

    Mileage : 135000

    Default

    hi lozza

    as envy said above have you got any codes

    the one that keeps cropping up is po170 for the z18xe

    this thread is going on at the moment (keep an eye on it)

    http://www.vectra-c.com/forum/showth...after-starting

  4. #4
    Regular Member Lozza's Avatar
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    Vehicle : Vectra c

    Trim : SRI

    Engine : 1.8

    Year : 06

    Default

    hi lads... ive just been out and took the MAF off and sprayed some contact cleaner throught and put it back together, started the engine and the revs are slightly higher than they usually are and it seemed ok for about 20 seconds then it started to miss again... could this be the MAF failing? hmm

  5. #5
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    Vehicle : vectra c

    Trim : ls

    Engine : 1800

    Year : 2004

    Mileage : 135000

    Default

    have you got any codes?

  6. #6
    Regular Member Lozza's Avatar
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    Vehicle : Vectra c

    Trim : SRI

    Engine : 1.8

    Year : 06

    Default

    no m8, im going to borrow a reader later today so ill keep you post muk

  7. #7
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    Vehicle : vectra c

    Trim : ls

    Engine : 1800

    Year : 2004

    Mileage : 135000

    Default

    ok

  8. #8
    Regular Member Lozza's Avatar
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    Vehicle : Vectra c

    Trim : SRI

    Engine : 1.8

    Year : 06

    Default

    Ok so i read the car with a laptop and this is the out come....

    Number of stored fault codes: 1

    U2107 - Invalid Data from BCM (Body Control Module)
    (71) - Present

    Number of stored fault codes: 1

    B0967 - Park Pilot Switch Circuit Open or High Voltage
    (05) - Present

    ^^^^ these are the fault codes that came up.

    Measuring blocks information:

    B1S1 O2 Sensor Heater (Bank 1 Sensor 1),Active
    B1S1 O2 Sensor (Bank 1 Sensor 1),156 mV
    B1S1 Air/Fuel Ratio (Bank 1 Sensor 1),Lean <<<< this switches between Rich and Lean
    B1 O2 Sensor Loop (Bank 1),Closed
    B1S2 O2 Sensor Heater (Bank 1 Sensor 2),Active
    B1S2 O2 Sensor (Bank 1 Sensor 2),801 mV
    B1S2 Air/Fuel Ratio (Bank 1 Sensor 2),Rich
    B1 Short Term Fuel Trim (Bank 1),-2 %
    Catalyst Protection Enrichment (Bank 1),Inactive
    Intake Manifold Valve 1,Inactive
    Full Load Enrichment,Inactive
    Desired Engine Idle Speed,688 RPM
    Idle Speed Modified,NO
    Idle Speed Offset,Inactive
    Vehicle Speed,0 km/h
    ---------------------------------------------------------------------

    Measuring blocks information:

    Mass Air Flow Sensor,0.62 V
    Mass Air Flow Sensor,9 kg/h
    Intake Air Temperature,1.25 V
    Intake Air Temperature,40 °C
    Knock Control,Inactive
    EGR Valve (Exhaust-Gas Recirculation),Inactive
    EGR Position Feedback (Exhaust Gas Recirculation),1.23 V
    EGR Position Commanded (Exhaust Gas Recirculation),0 %
    EGR Pulse Ratio (Exhaust Gas Recirculation),10 %
    Fuel Tank Ventilation Valve,Active
    Fuel Tank Ventilation Valve,14 %
    ---------------------------------------------------------------------------

    Measuring blocks information:

    Battery Voltage,13.7 V
    Engine Speed,706 RPM <<<< This fluctuates up & down
    Ambient Temperature,15 °C
    Coolant Temperature,90 °C
    Coolant Temperature,1.48 V
    Intake Air Temperature,39 °C
    Mass Air Flow Sensor,9 kg/h
    Normal Engine Operating Temperature,Active
    Fan Control 1,Inactive
    Fan Control 2,Inactive
    Fan Control 3,Inactive
    Oil Level,Normal
    Engine Oil Level Status,Okay
    Cruise Control,Inactive
    Cruise Control Tip Switch,Inactive
    Vehicle Speed in Cruise Control Range,Inactive
    Vehicle Acceleration,- - - m/s2
    Vehicle Speed,0 km/h
    Brake Switch 1,Inactive
    Brake Switch 2,Inactive
    Clutch Switch,Inactive
    A/C Pressure,700 kPa
    A/C Pressure,1.08 V
    A/C Relay (Air Conditioning),Inactive
    A/C Cutoff Mode (Air Conditioning),System OK
    A/C Information Switch (Air Conditioning),Inactive
    Malfunction Indicator (MI),Off
    Service Vehicle Soon (SVS) Indicator,Off
    ETC Limp Home Mode (Electronic Throttle Control),Inactive
    Engine Oil Change Warning,Active
    Injector Time,3.2 ms
    Ignition Spark Angle,9 °CA
    Ignition Dwell Time,2.1 ms
    Calculated Pedal Position,0 %
    Calculated Throttle Position,3 %
    Fuel Tank Ventilation Valve,2 %
    Knock Retard Cylinder 1,0 °CA
    Knock Retard Cylinder 2,0 °CA
    Knock Retard Cylinder 3,0 °CA
    Knock Retard Cylinder 4,0 °CA
    IAC Adaptation Slope (Idle Air Control),3.1 %
    Idle Speed Fuel Trim,6.6 ms
    Partial Load Fuel Trim,-47 %
    Full Load Fuel Trim,16 %

  9. #9
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    Vehicle InfoStats

    Vehicle : vectra c

    Trim : ls

    Engine : 1800

    Year : 2004

    Mileage : 135000

    Default

    well i thought coilpack but you have tried that

    what have you tried so far?

  10. #10
    Regular Member Lozza's Avatar
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    Vehicle : Vectra c

    Trim : SRI

    Engine : 1.8

    Year : 06

    Default

    spark plags, coil pack, cleaned throttle body... (slight change in idle but misfire still there) and used some contact cleaner on the MAF... it seemed ok for about 20 second when i sprayed the MAF but then went bk to the same misfire

    need someone who knows what them readings are tbh.
    Last edited by Lozza; 4th August 2012 at 19:36.

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