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What Causes Jerking and Battery Light Flashing When Accelerating?

1 Answers

IslaLynn

07/30/25 7:46am

In manual transmission vehicles, improper coordination between the throttle and clutch, along with high speed and low gear, can cause the engine to rev higher, leading to engine braking and resulting in jerking sensations. Conversely, low speed with high gear can also cause jerking and may even stall the engine. If the engine speed can be maintained around 2,000 RPM while driving, the jerking sensation becomes less noticeable. Other reasons for jerking include: 1. Upshift Jerking: The transmission's response speed is not fast enough, and the upshift speed cannot keep up with the throttle input, causing a jerking sensation during gear shifts. 2. Downshift Jerking: Due to the intervention of the energy recovery system, once the driver releases the throttle pedal or presses the brake pedal, the generator immediately starts working, adding load to the engine. This affects the engine speed, causing it to become out of sync with the clutch plate speed, resulting in a jerking sensation.

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