Thanks Thanks:  7
Likes Likes:  31
Results 1 to 9 of 9

Thread: Extremely Loud Exhaust Whistle?

  1. Top Of Page | #1
    Stevent85's Avatar

    User Info Menu

    Extremely Loud Exhaust Whistle?

    Hello everyone,

    My truck has been deleted since 5k miles, currently at 88k miles (EGR still intact).

    I am trying to figure out what is causing my exhaust to whistle so loud.

    I am not running the whistle tune (I never liked it).

    On start-up, the truck will have the usual hiss it has always had; however, after a couple of minutes, the exhaust begins to whistle and only worsens as the engine comes up to running temp.

    This has been going on for about four months (I know, I know, been putting it off).

    About a month ago, I replaced the turbo actuator.

    I checked around the manifold for signs of soot but saw nothing.

    Manifold looks normal from what i can see with the EGR in the way.

    The truck builds boost just fine and drives like it always has.

    What else should i check?

    What could be the problem?

    2016 Ram 2500, Deleted & Tuned by DRD, 5 in Flo-Pro exhaust, REVMAX ZeroFlex Valve Body, Thuren 2.5 Fox suspension.

  2. Thanks IGOTACUMMINS thanked for this post
  3. Top Of Page | #2
    Big Daddy IGOTACUMMINS's Avatar

    User Info Menu

    Re: Extremely Loud Exhaust Whistle?

    Are you talking about the exhaust brake?

    Thank you,
    igotacummins

    "The grass is greener where you water it"


  4. Likes AK Bob, corkey, watersupply189 liked this post
  5. Top Of Page | #3
    Lenbong's Avatar

    User Info Menu

    Re: Extremely Loud Exhaust Whistle?

    Would it have something to do with the VGT turbo breaking in?

    Is it possible for the turbo silencer ring to wear out?

    Not sure I'm on my first Cummins, and it only has 9k miles.


  6. Thanks IGOTACUMMINS thanked for this post
  7. Top Of Page | #4
    DANG IT'S COLD! AK Bob's Avatar

    User Info Menu

    Re: Extremely Loud Exhaust Whistle?

    Quote Originally Posted by Stevent85 View Post
    Hello everyone,

    My truck has been deleted since 5k miles, currently at 88k miles (EGR still intact).

    I am trying to figure out what is causing my exhaust to whistle so loud.

    I am not running the whistle tune (I never liked it).

    On start-up, the truck will have the usual hiss it has always had; however, after a couple of minutes, the exhaust begins to whistle and only worsens as the engine comes up to running temp.

    This has been going on for about four months (I know, I know, been putting it off).

    About a month ago, I replaced the turbo actuator.

    I checked around the manifold for signs of soot but saw nothing.

    Manifold looks normal from what i can see with the EGR in the way.

    The truck builds boost just fine and drives like it always has.

    What else should i check?

    What could be the problem?
    From what you described, it sounds like an exhaust leak.

    I would continue to pursue this possibility unless someone comes up with a better idea.

    Check to see if you can rotate any exhaust manifold bolt spacers when the engine is cold.

    Maybe you could try restricting the exhaust to see if the sound changes.

    With the engine off, you could pressurize the exhaust system with the discharge air from a shop vac or air compressor (low pressure) at the tailpipe.

    Then check the exhaust system for leaks with soapy water.

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

  8. Thanks IGOTACUMMINS thanked for this post
    Likes IGOTACUMMINS, corkey, watersupply189 liked this post
  9. Top Of Page | #5
    Stevent85's Avatar

    User Info Menu

    Re: Extremely Loud Exhaust Whistle?

    Quote Originally Posted by IGOTACUMMINS View Post
    Are you talking about the exhaust brake?

    Thank you,
    igotacummins
    This is definitely different from the exhaust brake.

    2016 Ram 2500, Deleted & Tuned by DRD, 5 in Flo-Pro exhaust, REVMAX ZeroFlex Valve Body, Thuren 2.5 Fox suspension.

  10. Thanks IGOTACUMMINS thanked for this post
  11. Top Of Page | #6
    Stevent85's Avatar

    User Info Menu

    Re: Extremely Loud Exhaust Whistle?

    Quote Originally Posted by AK Bob View Post
    From what you described, it sounds like an exhaust leak.

    I would continue to pursue this possibility unless someone comes up with a better idea.

    Check to see if you can rotate any exhaust manifold bolt spacers when the engine is cold.

    Maybe you could try restricting the exhaust to see if the sound changes.

    With the engine off, you could pressurize the exhaust system with the discharge air from a shop vac or air compressor (low pressure) at the tailpipe.

    Then check the exhaust system for leaks with soapy water.
    I will have to try that tomorrow when I'm off. Thanks for the suggestion.

    2016 Ram 2500, Deleted & Tuned by DRD, 5 in Flo-Pro exhaust, REVMAX ZeroFlex Valve Body, Thuren 2.5 Fox suspension.

  12. Likes AK Bob, corkey, watersupply189 liked this post
  13. Top Of Page | #7
    corkey's Avatar

    User Info Menu

    Re: Extremely Loud Exhaust Whistle?

    This might be a redundant question: Is your exhaust brake engaged when you crank the motor?

    If so, it sounds like what's already mentioned, "the exhaust brake."

    Engine cold on start up with brake engaged, the vanes are opened to a certain percentage to help warm up the motor quicker.

    The sound you say gets louder, which very well leans me more so to a bolt/stud that's loose and or a gasket is blowing by the surface of the head and manifold.

    Does it gradually increase in sound at idle and peak at a certain point?

    Does it get any louder while driving?

    Another thing to check is cracks in the manifold itself which AK BOB had mentioned.

    To check, the engine is cold and running.

    I would spray the manifold with soapy water and crank it over to check for bubbles which will indicate an area of an air leak.

    Another thing could be the exhaust brake tube that runs from the manifold to the sensor itself. It might or could be a loose 10mm tube fitting.

    Spray soapy water on the turbo flange and manifold flange as well.

    This is my 2 cents, and I hope it helps narrow your question down, friend.

    II 60HP STICKS, II 33% CP3, II S464 2ND GEN SWAP, FASS 165 TITANIUM SIGNATURE SERIES, AFE INTAKE HORN, S&B FILTER, 5" TURBO BACK, ALPHAREX HEAD LIGHTS, 38X13.5X20 RAZOR M/T, MOTO METAL RIMS, 6" LA LIFT KIT, COMPLET MM3 KIT, BUILT TRANSMISSION, 6 BOLT REDHEAD STEERING BOX

  14. Thanks IGOTACUMMINS thanked for this post
    Likes IGOTACUMMINS, AK Bob, watersupply189 liked this post
  15. Top Of Page | #8
    Stevent85's Avatar

    User Info Menu

    Re: Extremely Loud Exhaust Whistle?

    The engine brake is always on.

    With the DRD tunes it is always on.

    On cold start, the whistle is not there.

    The whistle starts about 15 seconds into startup and is the worst at running temp.

    It's obnoxiously loud. I don't work tomorrow, so I'll be shaping up the exhaust manifold tomorrow.

    2016 Ram 2500, Deleted & Tuned by DRD, 5 in Flo-Pro exhaust, REVMAX ZeroFlex Valve Body, Thuren 2.5 Fox suspension.

  16. Thanks IGOTACUMMINS thanked for this post
  17. Top Of Page | #9
    corkey's Avatar

    User Info Menu

    Re: Extremely Loud Exhaust Whistle?

    Stock manifolds are known to crack after so many heat cycles.

    I don't think it will take longer with soapy water.

    It's a crack somewhere.

    As the temp gets hotter, the noise gets louder from expansion.

    Check between the fingers of each port hole.

    II 60HP STICKS, II 33% CP3, II S464 2ND GEN SWAP, FASS 165 TITANIUM SIGNATURE SERIES, AFE INTAKE HORN, S&B FILTER, 5" TURBO BACK, ALPHAREX HEAD LIGHTS, 38X13.5X20 RAZOR M/T, MOTO METAL RIMS, 6" LA LIFT KIT, COMPLET MM3 KIT, BUILT TRANSMISSION, 6 BOLT REDHEAD STEERING BOX

  18. Thanks IGOTACUMMINS thanked for this post
    Likes watersupply189, AK Bob, IGOTACUMMINS liked this post

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •