I have a 2013 FX4 Supercrew. While using the 4x4 high in snow it works fine while moving forward and making turns at intersections.

However when I back out of the driveway and the wheels are turned sharply the truck seems to be fighting itself to move. It chatters and shakes, I'm concerned about giving it to much gas. Once the wheels are straight it is o.k. It does the same thing while trying to turn into a parking spot or back into a parking spot. Once you move straight for a bit then it stops. If I shft back to 2x4 the problem continues until the truck has been in motion for a bit.
There is no issue if I just leave it in 2x4.

Is there a problem or is it just me??

Thanks for your advise

 

Sorry, its not clear to me, so gotta ask :


Are you in 4Hi on drive pavement ? Or on snow ?

 

YES there is a problem
YES the problem is YOU!

This is a common mistake for 4WD rookies.
Any time you turn a corner, the outside wheels have to go further than the inside wheels. This is the purpose of the differential on the rear axle. This allows the 2 rear wheels to go the appropriate speed, and the front wheels are independent.

But when you put it in 4WD you link the 4 wheels together. Now they fight each other and you end up "dragging" the wheels along. The chattering you feel is the wheels sliding/jumping rather than rolling.

This is a MAJOR problem on dry pavement. The high forces can damage the drivetrain. This is a minor problem on snow/ice... there is less friction so it is probably OK. But still a bad practice.

The key is to always turn off 4WD when you are in a tight maneuvering position.
And NEVER use 4WD on dry pavement
(well, except maybe for straight-line acceleration to humiliate someone)

 

If you thumb through your Owner's Manual, you will find a description of this problem (Driveline Bind) in the section that explains how to use your 4x4 truck. As has already been said, do not use either 4Hi or 4Lo on dry pavement - especially when turning.