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Whine sound at low RPM
I have noticed a whine sound that seems like it is coming from the engine bay. It is noticeable at low RPM while accelerating or decelerating just after letting off the pedal and also while revving the engine with it in park. The sound reminds me of power steering pump whine. I checked the PS fluid and it’s full, maybe even a little over full. It seems to be its loudest when the engine is cold and I don’t notice it all the time when at operating temp.
Any advice on what to check?
2014 CCSB 2500 Laramie Longhorn
Sold-2003 Quad Cab, 48re, Second Gen64/68/13, BMS 100%, ARP 625s, Hamilton 188/220