the reason an engine "jerks" is because all of the fuel going into the cylinders are is not completely burning thus causing a loss of power...
Check the fuel filter or the fuel pump.
Could be just in need of a tune up.
chokeing because u dont have a good air fuel mixture in the combustion chamber
If the automatic transmission car jerks when accelerating and the dash does not indicate a gear, there is a problem with the transmission. Check the shift solenoid.
the fuel filter or carburetor might be plugged, really need to know when it jerks be it accelerating or stopping.
4x4 will jerk when accel. especially while turning. It is alot of torque on all four wheels pulling at the same time. You should only accel slowly with 4x4 on, especially in 4x4 low.
You have a serious front end problem. Have a mechanic inspect it asap.
Could be in need of a tune up. If the "check engine" light is or has illuminated, have it scanned for codes first. The codes will help lead you to the problem.
Have your brake system inspected. Sounds like you have a caliber sticking.
they are jerks becuase their moms are jerks and their dads are jerks so he learned from them and is about to get a punch from me.
could be a broken engine mount
Drive shaft is going out