Its a pull hard enough that it will jerk the steering wheel and send me to the shoulder if im not ready. Definitely cant drive one handed in 4A mode. The only way I can use it is both hands on the wheel and turn "into" it when I'm accelerating. Also notable is that if I'm intentionally steering right and accelerating it feels normal then.
Ok. How does it drive, starting from stopped, in a straight line, in Sport mode, at WOT for a short distance to the shift into 2nd gear, on CLEAN, dry, and FLAT pavement in 4H as compared to 4A?
The reason I emphasize CLEAN and FLAT is that in Texas (especially Texas), the roads are always covered with dust and get polished into slippery glazed condition AND tend to sink somewhat in the wheel tracks such that you will feel odd pulls left (and right) and wheel-slip while accelerating hard. As the front wheels run on these slippery uneven areas, the varying torque loads are strong enough to flex the suspension bushing and cause pretty strong pulling sensations.
If on a prepared surface like a drag strip there is high grip such that the difference in front half-shaft length and/or diameter will also result in a slight offset of the steering wheel as the shafts twist at different amounts, but it is usually only in that instant before the vehicle gets moving. As soon as it moves a few feet the shaft(s) rebound to their static or untwisted condition.
If your truck pulls the same in both 4A and 4H, you may have an issue with a specific suspension bushing broken, damaged, loose OR a problem with the electric steering rack. I know for fact in another of my Fords (FocusRS), the electric rack controller has a “PDC” Pull Drift Compensation function that causes the vehicle to steer itself which seriously interferes with maximum acceleration and pulls very strongly both left and right. I/we disable PDC via FORScan software to eliminate the shenanigans.
