2000 E39 530d, Turbo Actuator sticking!

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  1. 2000 E39 530d, Turbo Actuator sticking! 
    #1
    Chi
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    please watch this video and tell me im right.



    :(
     
     

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    That looks OK to me.

    My 330d when you start it the actuator drops like in the video, if revs are gradually increased the rod will move just before 3000rpm up about 1cm so pretty much as your video. I've a boost gauge fitted so can see what happens on that too, it behaves differently when driving than revving it stationary with no load on the engine.

    What's the car doing making you think the actuators stuck?
     
     

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    Chi
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    This is someone 320d and there's seems smooth where as mine seems jerky and just bam it shoots up.

    Iv had everything checked replaced maf, vac lines pressure converters tested. Map replaced.

    The problem is when I put my foot down sometimes you get full boost then othertimes it you can feel it's down on power but if I hold on the revs suddenly you can feel the change and full boost is back. It's much more apparent in lower gears on motorway the car seems fine pulls in all gears well.

    My thinking is the actuator is sticking or not working correctly or maybe the veins are sticking on the turbo. Because if I remove the vac line from the turbo actuator and run it. The car will boost fine above 2000 revs and goes nuts about 2500-3000
     
     

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    You tried running some injector cleaner through it? Forte stuff seams to get good reports at sorting out sticky variable vane turbos
     
     

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    the injector cleaners wont help the turbos at all, they only help the fuelling side.
     
     

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    Chi
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    All 6 injectors have been checked. What does the fuel treatment do.

    Car is still under warranty from garage I bought it from. So if it is the turbo I wanna make sure it gets replaced or refurbed. But it feels more like actuator not correctly working due to the veins. Well I how so anyways.
     
     

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    Quote Originally Posted by Deano16v View Post
    the injector cleaners wont help the turbos at all, they only help the fuelling side.
    I thought they help brake down carbon build up in the combustion chambers exhaust valve ports and turbo etc when there burnt?
     
     

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    they will help in the combustion chambers but i dont think they help too much with the exhaust gases at the turbo side. Happy to be proved wrong. That siad i ran one through every time i chnaged the oil.

    Am i right in thinking if the actuator is goosed you have to change the turbo anyway?
     
     

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    Chi
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    Yep because BMW won't sell it separately! But they will on petrol models
     
     

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    Don't think that turbo needs changing, the actuator obviously still operates just not as smoothly. Got to be worth a go with some injector cleaner and give it a good long fast drive.

    Worse case would be taking the turbo off and manually cleaning it off

    What sort of driving do you do normally?
     
     

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