T660 making noise at High RPM

Discussion in 'Kenworth Forum' started by Stepdeckenny12, May 16, 2020.

  1. Stepdeckenny12

    Stepdeckenny12 Bobtail Member

    9
    4
    Apr 23, 2020
    0
    My trucks been doing this high pitch howling noise for the past year. It’s getting on my nerves. It’s also worrying me. It’s a 2011-2012 Cummins ISX 450. I had put new liners new head, head gasket, even new diesel pump. Read somewhere on here someone was having a similar issue, and that the culprit was their fuel pump. I’ve never actually seen someone post the actual noise. Please I will take any suggestions into consideration. My mechanic here in Phoenix says it could Be my turbo. Oh yeah , turbo is about 1 year old or less. Replaced new. Everything from the EGR to DEf is deleted as well. Any suggestions will Help. I will post video and you will instantly hear noise when I’m idling but revd up to about 1400 1500 rpm. Thanks !
     
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

  3. Stepdeckenny12

    Stepdeckenny12 Bobtail Member

    9
    4
    Apr 23, 2020
    0
     
  4. singlescrewshaker

    singlescrewshaker Road Train Member

    1,727
    13,125
    Dec 31, 2017
    Palmgetto, FL
    0
    Shoot, I'm no mechanic but sounds fine from here.
    "High pitch howling noise", sounds like just turbo whistle to me..

    Probably just notice it more, now that some unnecessary parts are MIA..
     
  5. Stepdeckenny12

    Stepdeckenny12 Bobtail Member

    9
    4
    Apr 23, 2020
    0
    I will try to upload another video. Usually I play the video on a speaker or something that way you can distinguish the sound. On a phone really can’t tell the difference.
     
    singlescrewshaker Thanks this.
  6. Stepdeckenny12

    Stepdeckenny12 Bobtail Member

    9
    4
    Apr 23, 2020
    0
    One it hits 1400 rpm the a high pitch howl noise comes into play and that’s when I put the phone outside. Sounds a bit louder when I do. But like I said I will post another Vid.
     
    singlescrewshaker Thanks this.
  7. Stepdeckenny12

    Stepdeckenny12 Bobtail Member

    9
    4
    Apr 23, 2020
    0
    Ok, will upload the other Vid. I feel like it’s more noticeable.
     
    singlescrewshaker Thanks this.
  8. singlescrewshaker

    singlescrewshaker Road Train Member

    1,727
    13,125
    Dec 31, 2017
    Palmgetto, FL
    0
    For some reason I'm not seeing a 2nd video..

    I did notice the engine fan kick on at around the 26 second mark of the 1st video..
     
  9. Stepdeckenny12

    Stepdeckenny12 Bobtail Member

    9
    4
    Apr 23, 2020
    0



    Here’s another video. This is while I’m rollin, it makes the noise too. Sounds like a loud droning sound on in the vid. Thanks again !
     
  10. Stepdeckenny12

    Stepdeckenny12 Bobtail Member

    9
    4
    Apr 23, 2020
    0
     
    singlescrewshaker Thanks this.
  11. MACK E-6

    MACK E-6 Moderator Staff Member

    35,520
    128,665
    Sep 19, 2005
    Baltimore, MD
    0
    I’d say you’re right, from what I could tell.
     
    singlescrewshaker Thanks this.
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

  • Draft saved Draft deleted