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1KD turbo guide vane problem

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  • 1KD turbo guide vane problem

    Hi Guys and Girls. First post here but thought I'd share some info that I've just found on the 1KD engines.

    For the past few months a mate has had a few lights come up on the dash of his 2009 prado intermittently, in which it enters limp mode and is pretty useless. He removes the negative terminal from the battery for 60 seconds and the fault usually goes away. The lights that show up are the flashing 4-LO light, the engine light, the VSC light and the ABS light. This was a random fault which used to clear upon a reset.

    Yesterday it came up and this time wouldn't clear. Upon investigation we managed to pull a code of "34" out of the ECU which related to a few things (mainly boost pressure, solenoid problems or stepper motor problems). Un-plugged numerous of the sensors in relation to the intake pressure and various solenoids and stepper motors to no avail.

    Lastly we removed the linkage between the turbo stepper motor to check how easy the motor actuated (which when the engine was started and stopped it was smooth without problems) and if we could manipulate the guide vane actuator. The actuator was stiff and extremely difficult to move. We reset the code and started the engine. The fault never appeared again on a test drive however it was noticeable that there was a performance issue as the turbo wouldn't spool like normal. It could still be driven at the speed limit now.

    We've tried to move the guide vane actuator arm manually to loosen it up as I suspect its either carboned up or has something limiting its travel internally in the turbine housing to no avail. It does not return to its adjustable stop on the turbine housing so from my understanding we have 2 options.

    1. Replace the turbo with new or second hand
    2. Remove the turbo, disassemble it and see if it the carbon can't be cleaned up or the binding fixed.

    Has anyone else seen or heard of this problem before, cleaned their turbo or replaced their turbo with aftermarket that may be able to assist in recognising a good brand relatively cheap? Cheers

  • #2
    Originally posted by Fawcett View Post
    Hi Guys and Girls. First post here but thought I'd share some info that I've just found on the 1KD engines.

    For the past few months a mate has had a few lights come up on the dash of his 2009 prado intermittently, in which it enters limp mode and is pretty useless. He removes the negative terminal from the battery for 60 seconds and the fault usually goes away. The lights that show up are the flashing 4-LO light, the engine light, the VSC light and the ABS light. This was a random fault which used to clear upon a reset.

    Yesterday it came up and this time wouldn't clear. Upon investigation we managed to pull a code of "34" out of the ECU which related to a few things (mainly boost pressure, solenoid problems or stepper motor problems). Un-plugged numerous of the sensors in relation to the intake pressure and various solenoids and stepper motors to no avail.

    Lastly we removed the linkage between the turbo stepper motor to check how easy the motor actuated (which when the engine was started and stopped it was smooth without problems) and if we could manipulate the guide vane actuator. The actuator was stiff and extremely difficult to move. We reset the code and started the engine. The fault never appeared again on a test drive however it was noticeable that there was a performance issue as the turbo wouldn't spool like normal. It could still be driven at the speed limit now.

    We've tried to move the guide vane actuator arm manually to loosen it up as I suspect its either carboned up or has something limiting its travel internally in the turbine housing to no avail. It does not return to its adjustable stop on the turbine housing so from my understanding we have 2 options.

    1. Replace the turbo with new or second hand
    2. Remove the turbo, disassemble it and see if it the carbon can't be cleaned up or the binding fixed.

    Has anyone else seen or heard of this problem before, cleaned their turbo or replaced their turbo with aftermarket that may be able to assist in recognising a good brand relatively cheap? Cheers
    You should talk to baileys diesel & turbo service.
    They are a garret dealer.
    I have been told they can supply the part you need, pretty cheap.
    So, please let us know how it goes.

    Comment


    • #3
      Hey mate, I just had the exact same problem fixed by replacing the turbo actuator. Now getting 9psi of boost and back to normal!!!! It cost 800 bucks though
      .. Turbo was fine....

      Comment


      • #4
        i found these guys when i stuffed mine up on the cape
        https://www.turbochargersplus.com/pr...l-ct16v-turbo/

        i got water in it when crossing the Nolan creek
        but have learned that the position switch is not sealed , and you can remove it in the car (2 screws) actuate it and soak it with CRC and refit it and it should come good
        2008 Dune D4D manual GXL update - with lots of fruit !! + Roma Razorback Off Road Van

        Comment


        • #5
          Hi guys, I realise this is an older thread, but we've been trying to get to the bottom of the problems with our 150. It has the same lights come up and we've always had to clear the error manually before we drive away.

          We've also had power issues and sluggishness, particular when the Prado shifts down to get up a hill and never has the power to shift back up. We get stuck at 3000+ rpm at 100km/h.

          We've had error codes for the stability control, boost pressure, egr, ignition and fuel filter blockage. We've eliminated the egr as an issue I think, but the turbo has just come up on our radar.

          Are these similar symptoms to what you guys had? I might talk to my mechanic about the turbo actuator as well.

          Comment


          • #6
            You need to get an OBD tool and scan for codes... Also to see what boost you are getting...

            Comment

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