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Thread: problem with z19dth

  1. #1
    Regular Member neill's Avatar
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    Vehicle : Vectra C estate

    Trim : SRI

    Engine : Z19DTH

    Year : 2008

    Mileage : 79000

    Default problem with z19dth

    Keep getting the following code coming up on opcom and cant find much info on it, just wondered if anybody can help

    P0090 - Rail Pressure Control Solenoid Valve Circuit Range/Performance (Positive Deviation)
    (5B) - Not present

    opcom data shows the following, is everything looking okay here?

    Measuring blocks information:Battery Voltage14.0 VIgnition StatusOn 12VStarter RelayInactiveAPP at Idle Position (Accelerator Pedal Position)ActiveAPP Sensor 1 (Accelerator Pedal Position)0.96 VAPP Sensor 2 (Accelerator Pedal Position)0.47 VCalculated Pedal Position0%Desired Engine Idle Speed850 RPMEngine Speed851 RPMCamshaft Speed425 RPMIdle Speed ModifiedNOCalculated Air Flow52 kg/hMass Air Flow Sensor52 kg/hAmbient Temperature14 °CCharge Air Temperature31 °CCharge Air Temperature2.85 VCoolant Temperature46 °CCoolant Temperature2.73 °COil LevelLowOil PressureNormalEngine Oil Level StatusOkayB1S1 O2 Sensor Heater Temperature573 °CB1S1 O2 Sensor Heater PWM2%B1S1 O2 Sensor (Bank 1 Sensor 1)879 mVBarometric Pressure102 kPaBarometric Pressure4.02 VBoost Pressure Command104 kPaBoost Pressure102 kPaBoost Pressure1.64 VPulse Ratio Boost Pressure Solenoid Valve75%EGR Position Commanded (Exhaust Gas Recirculation)100%EGR Pulse Ratio (Exhaust Gas Recirculation)4%Swirl Level Control Solenoid Valve Pulse Ratio79%Throttle Position PWM Servo Signal5%Desired Common Rail Fuel Pressure30.21 MPaCommon Rail Fuel Pressure30.32 MPaCommon Rail Fuel Pressure1.15 VRail Pressure Control Solenoid Valve PWM31%Rail Pressure Control Solenoid Valve Current0.81 aFuel Metering Solenoid Valve PWM41%Fuel Metering Solenoid Valve Current1.42 aFuel Temperature24 °CFuel Temperature3.14 VA/C Information SwitchNot ProgrammedA/C Cutoff Mode (Air Conditioning)Not ProgrammedA/C Pressure (Air Conditioning)600 kPaA/C Pressure (Air Conditioning)0.9 VA/C Relay (Air Conditioning)Not ProgrammedBrake Switch 1InactiveBrake Switch 2InactiveClutch SwitchInactiveVehicle Speed0 km/hVehicle Speed in Cruise Control RangeInactiveVehicle Acceleration0.0 m/s2Cruise Control Tip SwitchInactiveCruise ControlInactiveEngine Torque5 NmTorque ControlInactiveRequested Torque (Traction Control)0 NmRemaining Oil Life46%Engine Oil Change WarningInactiveMalfunction Indicator (MI)OffService Vehicle Soon (SVS) IndicatorOffGlow Time RelayInactive 12VGlow Time TelltaleOff 12VDiagnosis Glow Time RelayInactiveMain Injection Timing-1.4 °CAFinal Fuel Injection Amount7.5 mm3/stkOdometer Value198.225 kmTank Sensor2.38 VFan Control 1InactiveFan Control 2InactiveFan Control 3Inactive

  2. #2
    Regular Member ALAN B's Avatar
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    Default

    Is you car running ok?

    I had the same code 2 weeks ago and it was the fuel pump that was on the way out, not providing enough pressure. Had to change the fuel pump to sort it out.

    Could also be a faulty sensor if your car is running ok

  3. #3
    Regular Member neill's Avatar
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    Vehicle : Vectra C estate

    Trim : SRI

    Engine : Z19DTH

    Year : 2008

    Mileage : 79000

    Default

    Only problem I've had is sometimes sluggish upto 2k then it flies, no starting problems at all. Doesnt show any elm or warnings on the dash.

    Anybody else know from the fueling results above

    Desired Common Rail Fuel Pressure30.21 MPa
    Common Rail Fuel Pressure30.32 MPa
    Common Rail Fuel Pressure1.15
    VRail Pressure Control Solenoid Valve PWM31%
    Rail Pressure Control Solenoid Valve Current0.81 a
    Fuel Metering Solenoid Valve PWM41%
    Fuel Metering Solenoid Valve Current1.42 a
    Fuel Temperature24 °C
    Fuel Temperature3.14 VA/C
    Last edited by neill; 20th March 2011 at 20:25.

  4. #4
    Regular Member neill's Avatar
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    Vehicle : Vectra C estate

    Trim : SRI

    Engine : Z19DTH

    Year : 2008

    Mileage : 79000

    Default

    bttt anyybody have any clues?

  5. #5
    Regular Member lee gsi's Avatar
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    Vehicle : Signum

    Trim : Design

    Engine : 1.9 CDTi

    Year : 2005

    Default

    Have a look at the EGR data and see if thats ok.

    Mine was flat below 2k so gave the egr a clean and it now drives perfect.

  6. #6
    Regular Member neill's Avatar
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    Vehicle : Vectra C estate

    Trim : SRI

    Engine : Z19DTH

    Year : 2008

    Mileage : 79000

    Default

    is this what you mean

    EGR Position Commanded (Exhaust Gas Recirculation)100%
    EGR Pulse Ratio (Exhaust Gas Recirculation)4%

  7. #7
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    Default

    EGR failure is known to cause lack of power upto 2k but doesn't always throw up the EML dude

  8. #8
    Regular Member lee gsi's Avatar
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    Vehicle : Signum

    Trim : Design

    Engine : 1.9 CDTi

    Year : 2005

    Default

    Thats it yeah.

    It should change quite a bit as you drive/rev the car

  9. #9
    Regular Member neill's Avatar
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    Vehicle : Vectra C estate

    Trim : SRI

    Engine : Z19DTH

    Year : 2008

    Mileage : 79000

    Default

    finally figured out why the code kept coming back, there was a pipe coming from he fpr to a part at the back of the engine and the jubilee clip was undone, so after a few days of driving checked the errors and its not come back.

    was gonna get the injectors tested but dont have to now

  10. #10
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    Default

    Hi.
    I have the problem that my Z19DT judder, especially doing the regen. I therefore tried to record data with op-com, and there is something that seems a little strange, the value of the Rail Pressure Control Solenoid Valve, is zero in both % and current, is that not a fault? I can see that neillīs data is 31% and 0,81A at idling
    Regards

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