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lbond01's avatar
lbond01
Explorer
Jan 12, 2018

2003 Cummins engine whine @2000+ RPM's ( Solved/Muffler?)

I have a 2004 Bounder Diesel on a 2003 freightliner XC with a Cummins 5.9 ISB. I had a over heating problem. I found the cooling fan had chunks missing on some of the blades. Had to remove radiator/ch...
ScottG's avatar
ScottG
Nomad
Jan 12, 2018
Doesn't really sound like a boost leak to me the way it comes on and the frequency of the sound itself but my hearing sucks.
That video was made with the vehicle parked wasn't it? If so then it wasn't building any boost. Needs to be under load to do that.

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