Hello Dracorian , I'm Chris, a current Ford Lincoln Mercury employee.
Thanks for visiting Just Answer. I will do my very best to help you resolve your concerns.
Describe how it feels and when you notice it most, does it occur only under 15mph while makeing tight turns resulting a grinding or moaning noise but no osciallation of the steering wheel.
Are all the tires the same brand and size and tread depth?
OK this in fact does mean its stuck in high range. The front hubs and axle are automatic so its always lock in up front. Since your dash light is not saying its in 4 high then you have a concern where the transfer case has a failure where the ball ramp is stuck or the cam is broken and it cant disengage. It can also be a wheel speed or transfer case speed sensor issue where it is locking in automatically thinking it needs to. You need to monitor speed sensors with a scan tool and then see if the clutch in the transfer case is being commanded on. Then you have to look into concerns inside the transfer case or with the shift motor.
Since it binds up to a halt this pretty much rules out rear axle limited slip clutches grabbing to much.
being new here how do i leave positive feed back after i hit the accept button?