I have a 2011 freightliner cascadia and when I drive I hear a whistling sound from under my engine I believe, I'm wondering if anyone knows what this could be, thank you!
Whistling Sound DD15
Discussion in 'Freightliner Forum' started by Bob.g, Apr 16, 2016.
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I have a larger turbo than stock and it whistles louder than any rig I have driven. It could be the same thing unless it just started doing something that it didn't use to do.
Bob.g Thanks this. -
Could be an exhaust leak from the manifold.
Bob.g Thanks this. -
On my 3rd Cascadia, they whistle while under boost.
Bob.g Thanks this. -
Has something changed?Bob.g Thanks this. -
daf105paccar Thanks this.
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Sounds like an exhaust or boost leak. Grab a spray bottle with soapy water and start spraying.
When mine got loud, I sprayed it all down and found nothing. Until I got up on the steer tire. That's when I noticed the large hose going from my air cleaner to the turbo had came loose at the back of the filter box.Bob.g Thanks this. -
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