What's causing this whining Noise
I have a 2001 F150 extended cab flareside 5.4L with auto trans. 4WD. Manual 4wd shifter over the Transfer case. For the last 5K miles, I have been hearing this whining noise.
It is coming from the transfer case as I can actualy feel the noise when I touch the shifter. Sometimes it will go away if I fiddle with the shifter sometimes not.
anyone have any ideas on this. It is annoying.

Have you checked the oil in the transfer case? There is a square plug on the back of it, about 1/2 way up. You need a 3/8" drive ratchet and extension to remove it. The oil should be bright red. It uses Mercon transmission fluid.


