Whining noise

[CarlosM]

Mine whines sounds like a screw blower setting on engine while in any gear in park it quits or I have noticed it also quits when at highway speeds and Torque converter locks. I thought it was TQ but if it same as above like DILLIGAF said I guess its just going to have to deal with it. Fluid/filter change did jack for it so oh well. I guess it will just sound like my hemi has a biga** blower on it LOL

Mine only happens at around 10-20mph while slowing down, it either Hellene when downshift from 3rd to 2nd or 2nd to 1st.

 

[Colt4thHorseman]

I used to have an awful whining noise in the front seat too…until I divorced my exwife. Now it’s complete welcomed silence.

 

[Danny Phillips]

I had a 66 Mustang that did this, my dad was a mechanic and it turned out to be the pinion bearing it would whine while decelerating and go away when you accelerated.

 

[hlcptr]

Same issue with my 2017 5.7 Longhorn. I've narrowed it down to colder winter temps, 15-20 minutes out of a warm garage, and engine rpm related. Very intermittent and brief, so its difficult to accurately diagnose. When I get a chance, I'll pull the belt and check the alternator bearings.

Very similar to the well known alternator whine on the Ford F150, 2004 - 2008, on very cold days.

 

[rpr]

Similar issue on my 2014 Laramie Limited. Sounds just like a whining power steering pump low on fluid but the truck has EPS. Driver side of engine compartment, intermittent, but when it does it the pitch fluctuates with the rpm.

Anyone figure this out?

 

[1979PowerWagon360]

I have the 8 speed. It could be wheel baring, idk if torque converter can cause this, I have no idea, im gonna have to take it in to see.

The fact that D has the noise and N does not certainly seems to indicate something in driveline especially converter.