Whistling ISX

Discussion in 'Volvo Forum' started by me myself and I, Apr 2, 2015.

  1. me myself and I

    me myself and I Heavy Load Member

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    Oct 5, 2009
    vernon hills,Il
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    My was doing it forever, and I've assumed it was due to free flow muffler i have on. But last few weeks its getting worse. And its not that hissing sound of bad manifold gasket. Its coming out of exhaust. I've checked turbo. Looked fine. I've tightened some clamps around it, but no change. What else should i look at?
     
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  3. Fajo

    Fajo The Dark Knight

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    Jan 26, 2013
    Boise, ID
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    What year ? A cracked DPF Filter inside can cause this, I see you said you also checked the Turbo but a bent fin or even a bearing can also make it whistle, but you should be able to hear that from the turbo it self instead of just the exhaust.
     
  4. Frghter Century 12.7 Detr

    Frghter Century 12.7 Detr Light Load Member

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    Mar 6, 2015
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    I used to have an International with a Cummins and it was the turbo actuator.
     
  5. Dna Mach

    Dna Mach Road Train Member

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    Texas
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    Are you losing power? Check your air to air boot, loosen it and spin it around checking for cracks on the inside.
     
  6. dieselfuelonly

    dieselfuelonly Road Train Member

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    Nov 12, 2012
    Chapel Hill, NC
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    Does it make a sound sort of like making a balloon squeal, oftentimes at lower rpm/light power, but not quite like a leak from an air to air boot? Commonly when the nozzle ring on the variable geometry turbo gets worn it starts to make that noise.
     
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  7. me myself and I

    me myself and I Heavy Load Member

    735
    312
    Oct 5, 2009
    vernon hills,Il
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    No DPF. I have spare actuator so maybe I'll try that.
     
  8. benrab

    benrab Medium Load Member

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    Apr 5, 2015
    Quebec ,Canada
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    Did you have a turbo failure in the past ?
    Some turbo debris can be stayed trap in the exhaust system ?
     
  9. me myself and I

    me myself and I Heavy Load Member

    735
    312
    Oct 5, 2009
    vernon hills,Il
    0
    New actuator fixed it. Im glad i had a spare.
     
  10. Stepdeckenny12

    Stepdeckenny12 Bobtail Member

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    Apr 23, 2020
    0
    Would you be able to help me out if I send you a video as to what I’m hearing. ?
     
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