Turbo whistle

How often do you feed it some cheese ...?

 

It could be a number of things, 77. A hole in a hose, if you're lucky. A hole somewhere, maybe your charge air cooler. Or, there are some metal tubes, clamps may be loose, something is out of focus with that whistle. I had a whistle, it was all the above before it was over, but my turbo was in great shape. Climbing out of Auburn, CA up to Donner Summit with 46,000lbs of corn in the trailer - it was sudden onset, only it wasn't whistling, it was screaming.

Burst into song with Yankee Doodle Dandy.

 

They will make a bit more noise when pulling hard, that's normal. In my experience when you have an air leak it lets you know that something isn't right. Without hearing it nobody will really know if it sounds like a leak or just a turbo working.

 

woooP WOOOp

 

I drove some petes and their turbo would get really loud when going up a grade or hill. Cat 15 engines with air cleaners beside the hood. I think that is what you are hearing...when the turbo whine gets loud it sounds like a whistle to me. I think that is what you are hearing....the more boost the louder the turbo...I could watch the boost gauge as the whistle got louder. Only when I was loaded, would the boost max out with the max noise from turbos.

 

Bumblebee Cummins?

Hate Cummins... Annoying right?

 

What truck for starters and motor? I'm gonna take a wild guess and say Volvo lol