What Causes Jerking Sensation at Low Car Speeds?

[OMatthew]

Common causes include engine oil passage blockage, which leads to reduced air intake, weaker ignition, or decreased fuel injection, resulting in insufficient power and causing jerking sensations during low-speed driving. Below are relevant explanations: Normal conditions: If an automatic transmission car exhibits jerking during acceleration, it's typically normal. This usually occurs when pressing the accelerator deeply causes the low gear to automatically increase engine RPM, followed by a noticeable RPM drop after upshifting, creating a distinct jerking sensation. Severe jerking: However, if the jerking suddenly becomes more severe than usual, it may indicate transmission damage. Possible causes include stubborn internal dirt and impurities, or clogging inside the valve body that prevents effective oil pressure regulation, leading to jerking, impact, and slippage.