Well if its an automatic, that's easy... I have this too. first answer this...
how fast are you going?
does it have overdrive (auto only)?
if manual what gear you get up to when this happens?
well if its auto, and your going fairly fast and suddenly let go of the gas... its going to change down quite quick due to gearbox design. This would give the sensation of the car braking...
if its a manual car, then you are most likely in too low a gear to start with, this is why we change down when we loose our brakes, speed reduction is effective immedeatly without brakes...it slows you down to save emergency speed...1 min or so.
AnswerI am having a similar problem with my grand am! I have been told that it could be a motor mount AnswerMy 1993 Buick Skylark had the same problem last year-- if I took it above about 40mph after the engine was warmed up, every deceleration thereafter caused the car to shudder. After researching it a bit, I decided it was probably the Torque Converter Clutch Solenoid in the automatic transmission, so I had it replaced and the problem disappeared. I've read that this is a somewhat common problem with Overdrive, which my car does not have, so apparently the problem doesn't play favorites.a small evap leak would not cause your car to jerk.
would an automatic transmission car jerk when shifting after having had a transmission flush
One of the possible causes of a Pontiac Bonneville to jerk during acceleration is that the car needs a tune up. The engine misfiring can lead it to jerk as you accelerate.
The velocity-time graph for a car first accelerating and then decelerating uniformly would have a positive slope during acceleration, representing an increase in velocity, and then a negative slope during deceleration, showing a decrease in velocity. The graph would form a "V" shape with two straight lines meeting at a point where the acceleration changes to deceleration.
A car may jerk during acceleration or deceleration due to issues such as a malfunctioning transmission, worn-out spark plugs, or fuel delivery problems. These factors can disrupt the smooth transfer of power from the engine to the wheels, leading to erratic RPM readings. Additionally, problems with the throttle position sensor or issues with the ignition system can also contribute to this jerking motion. Regular maintenance can help identify and resolve these issues.
STICKING BRAKE CALIPER
There are several problems that could cause your car to jerk when slowing down. The most common cause would be a transmission problem.
What kind of car is is? When it jerk while shutting off, do you turn the key off and it sits there chugging for a second before stopping?
try changing plugs and wires
could be failing transmission
During a car crash, the force that occurs is the result of the sudden deceleration of the car. This force is known as an impact force and can cause damage to both the car and its occupants. The force is proportional to the change in momentum of the car during the collision.
Average speed during the deceleration is 1/2(19 + 0) = 9.5 meters per second.Time of deceleration is (31 / 9.5) seconds.Magnitude of deceleration is (change of speed) / (deceleration time) = 19 / (31/9.5) = (19 x 9.5) / 31 = 5.823 m/s2(The acceleration is the negative of this number.)