What Causes CVT Jerking?
2 Answers
Jerking refers to the impact phenomenon that occurs when the transmission shifts gears. Here is relevant information: 1. Advantages: The benefits of a CVT transmission include its compact size, simple structure, easy maintenance, and smooth operation. It is primarily used in Japanese, Korean, and some domestic vehicles. The CVT transmission allows the engine to stay within an optimal RPM range, making cars equipped with this transmission generally more fuel-efficient. 2. Disadvantages: The drawbacks of a CVT transmission are its low torque capacity and susceptibility to slipping. As a result, CVT transmissions are typically paired only with small-displacement engines. Larger-displacement engines, which produce higher torque, require an AT transmission.
I just solved the CVT jerking issue in my car and found it's closely related to transmission fluid. Over time, the fluid deteriorates, and when the additives fail, the hydraulic system pressure becomes unstable, causing jerky engagement between the chain and cones. Last time my car jerked like riding a horse during low-speed acceleration - changing the fluid immediately made it smooth. Here's a lesser-known fact: during cold starts in winter when fluid temperature is low, belt slippage can also cause jerking, which normalizes after driving about two kilometers. Additionally, if engine output is unstable during hard acceleration, the CVT's frequent ratio adjustments can create a tugging sensation - this can be diagnosed by checking the vehicle's computer data stream.
