2008 Ford Explorer Sport Trac -4WD issue

in gear moving try to lock up binding down in 4 wheel dr or 2 wheel dr

Please start over. Your statement is very unclear.
When you repost, please locate the upper case key and punctuation keys on your device.

It sounds like you’re having trouble selecting 2wd/4wd while the vehicle is moving but more and clearer information would help a lot.

Can you shift into 4wd when the truck is stopped . . . ?!