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Thread: Turbo Acting Up

  1. Top Of Page | #1

    Turbo Acting Up

    So I was driving on the interstate, and the turbo on my 2016 6.7L Cummins (Deleted EGR and DPF) started opening up to 75% then would close back to 33% like it always stays at.

    It sorta gets lost then goes back to where it should be.

    Exhaust brake always works, and there’s no other issue or code (yet).

    Any ideas?

    The VGT desired and actual are the same as well, so to me if the actuator was failing it wouldn’t be rolling with the desired number.

    Thanks.


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  3. Top Of Page | #2
    Basic Member cwendel's Avatar

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    Re: Turbo Acting Up

    Actuator is going.

    Many start the random cycling before they stop.

    Most likely the sensors for the stepper motor are going out.

    Might also want to check your batteries.

    2013 2500 6.7 cummins crew cab. white and stock as can be
    using Tapatalk


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  5. Top Of Page | #3
    Daily Grinding! RamIt's Avatar

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    Re: Turbo Acting Up

    Definitely sounds like an actuator issue.

    However, the VGT has been known to do weird things depending on tune.

    Surging has been a common issue on these trucks for a long time and is generally resolved through adjustments in the tune.

    If you don't have any codes, you may want to get with your tuner and see if they can offer any solutions.

    2021 3500 Mega HO DRW

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  7. Top Of Page | #4
    I WILL STAND! AK Bob's Avatar

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    Turbo Acting Up

    Quote Originally Posted by Cgoodwin View Post
    So I was driving on the interstate, and the turbo on my 2016 6.7L Cummins (Deleted EGR and DPF) started opening up to 75% then would close back to 33% like it always stays at.

    It sorta gets lost then goes back to where it should be.

    Exhaust brake always works, and there’s no other issue or code (yet).

    Any ideas?

    The VGT desired and actual are the same as well, so to me if the actuator was failing it wouldn’t be rolling with the desired number.

    Thanks.
    I agree, strange the actual follows the desired.

    I would check with your tuner first.

    Please keep us posted.


    2014 RAM 3500 (Aisin) 3.73 4X4 Limited Crew Cab Long Bed DRW. Oil Bypass Filter, 50 Gallon auxiliary fuel tank.

    Sent from my iPad using Tapatalk

    2014 RAM 3500 (Aisin) 3.73 4X4 Limited Crew Cab Long Bed DRW. Oil Bypass Filter, Fuel Filtration Kit, Cold Air Intake, City Diesel Actuator and 50 Gallon Aux Fuel Tank.

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  9. Top Of Page | #5
    ZeroSignal's Avatar

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    Re: Turbo Acting Up

    @Cgoodwin sounds like the exact problem I'm having.

    Mine eventually threw a MAP sensor code.

    I replaced the sensor, and it drove fine for a day or two then started up again.

    It seems to happen randomly... one key cycle the truck runs great, the next time I take it out the VGT% (actual & desired) is jumping all over the place.

    I've noticed that it will sit at 75% at idle, or if it does happen to drop back to 0% like it's supposed to, as soon as I press the throttle it jumps to 75%, then 30%, then 40%. Feels like a gasser with a really bad misfire/hesitation.


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  11. Top Of Page | #6
    Basic Member cwendel's Avatar

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    Re: Turbo Acting Up

    Anybody solve this issue yet?

    Just wondering.

    2013 2500 6.7 cummins crew cab. white and stock as can be
    using Tapatalk


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  13. Top Of Page | #7
    #1 VENDOR cumminsdieselfreak's Avatar

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    Re: Turbo Acting Up

    Quote Originally Posted by Cgoodwin View Post
    So I was driving on the interstate, and the turbo on my 2016 6.7L Cummins (Deleted EGR and DPF) started opening up to 75% then would close back to 33% like it always stays at.

    It sorta gets lost then goes back to where it should be.

    Exhaust brake always works, and there’s no other issue or code (yet).

    Any ideas?

    The VGT desired and actual are the same as well, so to me if the actuator was failing it wouldn’t be rolling with the desired number.

    Thanks.
    We at Dude's Diesel are 1 of 2 dealers for the City Diesel Actuator.

    They're designed to save you tons of money over the factory setup or going with an aftermarket setup.

    I'll shoot you a PM.

    2018 Ram 2500 4x4 G56
    Romans 10:13

    See what we are up to on:
    FACEBOOK | INSTAGRAM
    Or Email me at:
    joe@ddpmotorsports.com
    www.ddpmotorsports.com


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