How to Solve Severe Jerking in AT Transmission?
2 Answers
Severe jerking in AT transmission can be addressed by visiting a 4S shop for inspection. Below is an introduction to the causes of AT transmission jerking: 1. Improper Maintenance: Many vehicles equipped with AT transmissions do not specify a transmission fluid replacement cycle in their manuals, only stating regular checks and replacement when necessary. This creates a vague concept. The operation of various mechanical components inside the transmission inevitably leads to wear, with metal debris being adsorbed by magnets. Although there is a transmission filter, some impurities will still mix into the transmission fluid. When these impurities accumulate in large quantities, they can cause the transmission fluid to deteriorate, resulting in gear-shifting jerking. 2. Software Updates: Modern vehicle transmissions and engines are controlled by pre-programmed software to ensure normal operation. Before leaving the factory, vehicles undergo hundreds of thousands of kilometers of testing and are only released to the market after passing. However, the real test comes when the vehicles are in the hands of owners, facing various road conditions and driving habits. Automakers also collect various issues reported through multiple channels and make timely improvements, with upgrading transmission control programs being one of them.
When I first started driving an automatic transmission car, I also experienced strong gearbox jerking. It felt like the car was being kicked during acceleration or deceleration, which was particularly uncomfortable. After inspection, I found that the main issue was aged or insufficient transmission fluid, causing rough gear shifts. I went ahead and replaced it with new OEM fluid, and also cleaned the oil pan and filter screen. The improvement was noticeable. If the problem persists, it might be a minor bug in the control module, which requires a software update at the dealership. Remember not to stomp on the accelerator, as that can worsen the jerking. Regular maintenance is crucial—I recommend changing the fluid every 40,000 kilometers to avoid major issues. Transmission repairs are expensive, so addressing problems early saves both hassle and money. If you encounter similar issues, it's best to keep a record of details like the frequency of jerking and the speed, as this helps technicians diagnose the problem faster.
