What makes a car jerk?
This could be the cause if an improper alignment if it happens under normal straight line driving. If the jerk is more prevalent when going on bumpy roads, it may be a sign of bad shocks or springs. If the jerk is occurring during braking situations, the problem may be related to the bearings being worn or warped discs/drums in the braking system.
Why does my air conditioner hiss and jerk the car then blow hot air then jerk and hiss again and then blow cold?
Your A/C compressor is shot. It's internal computer (or that of your car) is malfunctioning. The "jerk" is when your "A/C" kicks in...an A/C compressor takes much of your cars usable power. As it turns on and off you will get the hiss and jerk. (the hiss comes from the overworked compressor lines cooling)
Answer am not 100% but it may be you are not in the correct gear for your speed or you could be running out of fuel Bad universal joints or CV Joints. Low on transmission fluid. Transmission slipping Engine miss due to Bad plugs/wires a lock up converter on the tranny will jerk if the pressure switch is going bad. Answer The mass air flow meter could be broken Is your car a stick shift…