Why is there a strong jerk when shifting from second to third gear in an automatic transmission?

[HannahLee]

Introduction to the reasons for a strong jerk when shifting from second to third gear in an automatic transmission: Transmission issues: The jerking during gear shifts in an automatic transmission could be due to dirty transmission fluid, oil pump pressure leaks, or internal clutch slippage in the transmission. A detailed analysis based on the transmission's data stream is required to determine the exact cause. Shift solenoid issues: If the vehicle has reached 2 years or 60,000 kilometers, it is recommended to replace the transmission fluid. If the issue persists after replacing the transmission fluid, the shift solenoids for second and third gears should be inspected. Engine oil passage blockage: The engine's ignition, air intake, and fuel injectors collectively determine fuel combustion, which is the source of the engine's power. If the air intake decreases, ignition weakens, or fuel injection reduces, the power output will be insufficient, resulting in a jerking sensation.

[PaulLynn]

I remember when I used to drive my automatic car, there was always a jerking sensation when shifting from second to third gear, like the car was lurching forward, which was really annoying. I asked a car-savvy friend about it, and he said it's usually due to transmission fluid issues—either the fluid is too dirty or insufficient, making the shifting process less smooth. The shift from second to third gear is a critical point from low to high speed, and if the oil pressure is unstable or the solenoid valve controlling the shift is clogged, this kind of problem easily occurs. Another factor is clutch plate wear; if you often accelerate aggressively, this issue is more likely to happen. Now, I regularly check the transmission fluid and change it once a year, and I also pay attention to pressing the accelerator smoothly, avoiding sudden acceleration, which has reduced the jerking significantly. If you ignore this problem for too long, it could lead to more serious transmission failures, so don’t be lazy—get it checked at a repair shop as soon as possible to avoid bigger expenses later. After all, a car is like a partner; take good care of it, and it’ll stay with you longer.

[McSkylar]

My car is an old automatic transmission model, and occasionally there's a sudden jerk when shifting from second to third gear, making my whole body shake. After experiencing this several times, I've found the main causes are usually aging transmission fluid or low fluid levels, leading to unstable oil pressure that affects gear shifts. During the transition from second to third gear, the vehicle speed is increasing, and poor control can easily result in jerking. Additionally, sensor issues might be the culprit, such as a failing speed sensor. I recommend starting with the simple solutions: check the transmission fluid's color and level - if it's cloudy or low, top it up with new fluid. If there's no improvement, it's best to visit a professional shop for a computer diagnostic system to check the solenoid valves or clutch components. When driving normally, avoid sudden acceleration, as this can reduce jerking. Don't underestimate this issue, as letting it persist can damage the engine. In short, regular maintenance is key to keeping your car happy and preventing complaints.

[JaxsonDella]

After driving for many years, I've encountered situations where the automatic transmission car has a strong jerk when shifting from second to third gear. This is usually an internal transmission issue, such as worn clutch plates or loose brake bands, which can cause a jerky power transition during the 2-3 shift. Poor oil quality is also a hidden danger, as old oil containing impurities can affect hydraulic pressure control. Additionally, a bug in the ECU control unit misjudging the shift timing could be the cause. My suggestion is to change the transmission oil and filter regularly, approximately every 30,000 kilometers. If the jerking is frequent, check the electrical connections or sensors. Don't attempt to disassemble it yourself to avoid making things worse. This problem is common in older cars, and addressing it early can extend the vehicle's lifespan and make driving safer and more comfortable.