What Causes Jerking During Low-Speed Acceleration?

[VonCamilla]

Jerking during low-speed acceleration is caused by the engine. The engine's ignition, air intake, and fuel injectors collectively determine fuel combustion, which is also the power source of the engine. If the air intake decreases, ignition weakens, or fuel injection reduces, the power output becomes insufficient, resulting in a jerking sensation. Jerking during the initial acceleration of an automatic transmission vehicle is normal. If you want to accelerate quickly while driving, you need to press the accelerator pedal deeply. At this point, the automatic transmission will downshift to increase the engine speed. When the speed reaches a certain level, the transmission will upshift. After upshifting, there will be a noticeable drop in engine speed, leading to a relatively obvious jerking sensation.