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What Are the Common Faults of Automatic Transmissions?

2 Answers

OMarley

08/28/25 8:08am

Common faults of automatic transmissions include difficulty in shifting gears, gear jerking, transmission noise, and overheating. The following are detailed introductions to common faults: Difficulty in shifting gears and jerking sensation: Relevant components such as gears inside the transmission do not receive sufficient lubrication, and a durable lubrication film cannot be formed, preventing the components from operating smoothly. Automatic transmission gear jerking and impact sensation: Impurities inside the transmission cause blockages in the valve body, hindering its smooth up and down movement and preventing the sequential adjustment of oil pressure, leading to gear jerking and shifting impact faults. Transmission noise and loud sounds: Dirt inside the transmission, wear or severe wear of components such as bearings and gears, or damage to the sides of gears.

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McAshlyn

09/10/25 6:16am

I've encountered quite a few common automatic transmission issues. The most frequent one is rough or delayed shifting, like when the car responds sluggishly after pressing the accelerator, giving a sensation of intermittent power delivery. Another common problem is slipping, where the tachometer surges during acceleration but the speed doesn't increase accordingly, usually caused by aged or insufficient transmission fluid. Transmission fluid leaks are also troublesome - if you spot oil stains under the chassis, promptly check the seals. More severe malfunctions include control module failures. Many modern vehicles use electronic control systems, where sensor faults can directly cause erratic shifting or trigger safe mode. Overheating frequently occurs too, especially during continuous low-speed driving in traffic jams, as poor heat dissipation can damage the transmission. Neglecting these issues may lead to costly major repairs, so regular fluid changes and level checks are essential. When experiencing severe slipping, I recommend stopping the vehicle to let it cool before attempting to drive again.

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