The Trucks a 2017 Cascadia with a DD13. At higher RPMs above 1500, it gets a loud screeching noise. It’s consistently the same, I think it’s a heat shield on the turbo. Sounds terrible. Don’t think it’s anything serious. Let off fuel, it stops. Turn on jakes it starts doing it again. Anyone ever had this or a similar problem? If so what was the cause?
Screeching noise on DD13
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Rideandrepair, Jan 5, 2024.
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Magoo1968 and Rideandrepair Thank this.
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Screeching is usually one of the charge air boots not sealing.
Rideandrepair Thanks this. -
It sounds like metal to metal. Like the turbo fins hitting. That’s what I’m worried about. I originally wrote it off as nothing serious. Thought it was a clutch or a flywheel noise. I think it’s definitely on the engine near turbo. I’ll check the boots. Makes sense because it goes away as soon as I let off the fuel.
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Rideandrepair Thanks this.
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I had what I thought was a air to air leak starting . I explained to our mechanic he agreed that it was ok to finish trip . Noise got louder and I noticed trans temp climbing fast on pulls 3 hrs later trans came apart . The oil cooler line rubbed through but no oil was on front of trailer or catwalk area. Apparently this was the 3rd truck in 2 years this happened on in the fleet all 2016/17 models. PS I complained about a engine oil leak but it was obviously the trans oil line.
JB7, Rideandrepair and Hammer166 Thank this. -
Rideandrepair and Magoo1968 Thank this.
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