Squealing noise coming from engine.

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by BigCatKy, Feb 27, 2021.

  1. BigCatKy

    BigCatKy Bobtail Member

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    Feb 27, 2021
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    Today when I started my 2016 international box truck, there was a load squealing noise coming from the engine. I’ve heard before but it went away. Today it’s not going away. Does anyone have an idea of what this is and is it still safe to drive?
     
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  3. rachi

    rachi Road Train Member

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    Yeah, its probably your fan (drive belt)
     
  4. McMahons Trucking

    McMahons Trucking Light Load Member

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    The belt tensioner, belt or an accessory ran by the belt. Just check it all.
     
  5. BigCatKy

    BigCatKy Bobtail Member

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    Feb 27, 2021
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    Thanks for the info. Unfortunately I’m not mechanically sound. Is this something that I could possibly still drive with about 500 miles until I can get it in the shop on Monday?
     
  6. Numb

    Numb Crusty Curmudgeon

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    when you opened the hood , where exactly was it coming from.

    I'm assuming you did check under there.
     
  7. BigCatKy

    BigCatKy Bobtail Member

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    Feb 27, 2021
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    I did! It’s coming from around the belts.
     
  8. Flint1

    Flint1 Medium Load Member

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    6.7L cummins ISB? Belt tensioner. Look at the pass side, the tensioner will be crooked. It will walk the belt off the fan pulley, and rip the wires out of the electric fan hub if ignored too long.
     
    BigCatKy Thanks this.
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