What Causes Gear Shifting Jerkiness?

1 Answers
JamesonLee
07/30/25 8:27am
If this situation occurs in a manual transmission car, it is generally due to improper coordination between the throttle and clutch during gear shifting. For automatic transmission cars, this issue arises because of mismatched gear ratios in the transmission. Below are relevant explanations: 1. Maintain Stable RPM: To reduce gear shifting jerkiness, it is essential to keep the car engine's RPM stable during gear changes. This can be achieved by adjusting the shifting RPM, shortening the shifting time, applying throttle during shifting, and performing semi-clutch operations to stabilize the engine RPM. 2. Additional Information: The optimal RPM for gear shifting is around 2000 RPM. Shifting at too low an RPM may cause the vehicle to stall, while shifting at too high an RPM can lead to vehicle lurching. Shortening the shifting time is crucial because the shorter the shifting time, the more stable the engine RPM will be. Applying throttle during gear shifts is necessary because prolonged shifting time causes the engine RPM to drop, resulting in jerkiness.
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