its probably just you jerking yourself
It may be in need of a tune up.
If car jerks around 70 miles per hour, the wheel may off balance. The axle or undercarriage may also have issues.
throttle plate stuck? I'm not sure. When I'm driving, I take my foot off the gas and the car jerks and when I have to stop and I push on the brakes the car revs and jerks forward and occasionally stalls
95 lin town car when turning on air conditioner and the clutch kicks on in the air compressor it jerks and the jerks at the same time car experiencing loss of electricity from engine when it jerks
no .... no way.
It might be that people toke it off or it might not have oil or the transmission doesnt work.
You can set the alarm off by just simply jumping on the car.
This means when your car jerks very hard.
Water in the gas
Is normal.
By jumping on the car.
When an automatic car jerks into fourth gear it could be the transmission. You may need transmission fluid or a new transmission. A licensed mechanic can check the car.