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Thread: 1.9cdti question about the turbo

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    Default 1.9cdti question about the turbo

    Hi, in the picture below, the vacuum actuator encircled in blue controls the waste gate or the variable vanes on the turbo? I tend to think it controls the waste gate because when I disconnect it the turbo does not kick in, so I think the wastegate remains open with the hose disconnected.
    If this is true what solenoid/actuator controls the variable vains ?

    vacuum actuator.jpg

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    Default

    You are correct that it controls the wastegate as te other end of that pipe goes onto the wastegate on the turbo as for the vanes I am not sure how they are controlled some one will know

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    Thanks winnie, does anyone know about the vanes?

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    I don't think the turbo's on the 1.9 CDTI engines have variable vanes.
    There is only one actuator connected, goes to the wastegate.

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    TIS sais:
    The Z 19 DT OHC diesel engine and the Z 19 DTH DOHC diesel engine are equipped with a turbocharger with variable inlet geometry (variable nozzle turbine) at the exhaust gas turbine. The charge pressure is adapted depending on the load and the engine speed by adjusting the plastic fins in the exhaust gas turbine. The plastic fins in the exhaust gas turbine are actuated using negative air pressure. The negative air pressure is controlled by a solenoid valve and forwarded to a vacuum unit to adjust the plastic fins of the exhaust gas turbine. The plastic fins are then adjusted by the vacuum unit control linkage.

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    Default

    Quote Originally Posted by andreitone View Post
    TIS sais:
    The Z 19 DT OHC diesel engine and the Z 19 DTH DOHC diesel engine are equipped with a turbocharger with variable inlet geometry (variable nozzle turbine) at the exhaust gas turbine. The charge pressure is adapted depending on the load and the engine speed by adjusting the plastic fins in the exhaust gas turbine. The plastic fins in the exhaust gas turbine are actuated using negative air pressure. The negative air pressure is controlled by a solenoid valve and forwarded to a vacuum unit to adjust the plastic fins of the exhaust gas turbine. The plastic fins are then adjusted by the vacuum unit control linkage.
    And why did you ask/start the thread?

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    Vehicle : CDTI 150

    Trim : Design

    Engine : Z19DTH

    Year : 2005

    Default

    The original thread was regarding the where abouts of the solenoid that controls the vanes. Not if the car actually had them.

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    Vehicle : Golf 7

    Trim : GTD

    Engine : 2.0 TDI 184PS

    Year : 2014

    Mileage : 40000

    Default

    Quote Originally Posted by lesj View Post
    The original thread was regarding the where abouts of the solenoid that controls the vanes. Not if the car actually had them.


    Most likely Electric Servo.

    Gazza4

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    Well, reading about the turbo in TIS it does say nothing about a wastegate, and after searching the forum I think there is no waste gate on this variable vane turbo. The role of the waste gate is played by the variable vanes in an open (sort of) position. Does this make sense?

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    Default

    And could the vacuum hose go to the variable vanes control and not the waste gate?

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