Why is there a jerky feeling when an automatic transmission shifts up?
2 Answers
Jerky feeling is caused by a mismatch between the engine and vehicle speed. While driving, consciously release the accelerator pedal before shifting, and the transmission will respond immediately and complete the shift automatically. Then, press the accelerator again to enter a higher gear. The biggest advantage of driving an automatic transmission vehicle is its high convenience, as the vehicle does not require manual gear shifting. Here is additional information: Detailed explanation: Transmission shift jerkiness can be considered a normal situation and there is no need to worry. The main reason for this issue lies with the transmission itself. Structurally, whether it's an AT or CVT transmission, they all rely on electrical signals for shifting and recognition. Shift jerkiness occurs when the transmission breaks the original inertia during the process of switching between two different gears, and the sudden force generated reacts back on the vehicle body, causing the jerky sensation.
The jerky sensation during upshifting in an automatic transmission car may stem from internal transmission issues, such as worn clutch plates or hydraulic system malfunctions. Clutch plates experience significant friction wear during frequent gear shifts, and when they thin out, power delivery becomes less smooth, causing a tugging sensation during upshifts. Unstable hydraulic pressure or clogged valve bodies in the hydraulic system can also make gear shifts sluggish, especially in older vehicles prone to such problems. It's advisable to regularly inspect the transmission fluid condition and replace aging components to prevent worsening of the jerky shifts. I've personally encountered this issue and resolved it by promptly visiting a repair shop. Avoiding sudden acceleration during normal driving can help reduce component wear. Additionally, inaccurate data from sensors like the speed sensor can lead to ECU misjudgment, which may also cause jerky shifts, so it's worth checking these during maintenance.
