CM2250 loud engine whine, need advice
11-01-2020, (Subject: CM2250 loud engine whine, need advice ) 
Post: #1
CM2250 loud engine whine, need advice
My truck is a 2013 Peterbilt 386 with a CM2250. The truck has an engine whine that is considerably louder than the motor running. You can hear it from across the parking lot. It sounds like a PTO running or a supercharger. It gets louder with rpm as well. I spoke with rawze and he mentioned it could be the oil pump TSB.

Does anyone have any suggestions or insight on what could be causing this?

Here are links to 3 different videos I recorded so you can hear the noise.

https://www.youtube.com/watch?v=8EUuXfODS4I

https://www.youtube.com/watch?v=mnW0rlmSUXY

https://www.youtube.com/watch?v=4PGSbrwvTVk
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CM2250 loud engine whine, need advice - suined - 11-01-2020



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