What are the symptoms of a damaged automatic transmission in a car?

1 Answers
Kayden
07/30/25 3:02am
There are four main symptoms of transmission damage: excessively long or short shifting time, transmission fluid leakage, transmission slippage with weak acceleration, and transmission jerking accompanied by unusual odors or noises. The details are as follows: Excessively long or short shifting time: Generally, automatic transmissions have specific shifting RPMs and speeds. If you notice that the shifting time suddenly becomes too long or too short, it indicates that the transmission's gear ratio is out of proportion. You may also feel that the engine RPM is unusually high. In more severe cases, the transmission may fail to shift or experience delayed downshifting, all of which suggest transmission issues. Transmission fluid leakage: This is often caused by aging or poor sealing of gaskets. Another reason could be manufacturing defects leading to porosity in the transmission casing. It is important to promptly inspect the transmission's sealing components. Transmission slippage with weak acceleration: While driving, if you hear the engine revving without a corresponding increase in speed and feel the car lacks power, this is usually due to burnt clutch plates. If water enters the transmission due to external factors, it can disrupt normal operation. Possible causes include coolant mixing with transmission fluid or water entering through the transmission vent cap. Transmission jerking with unusual odors or noises: In daily use, low or degraded transmission fluid, improper gear meshing (either too tight or too loose), poor gear engagement, or excessive bearing clearance can all lead to transmission noises. The transmission relies on hydraulic fluid to function. When the fluid temperature rises too high, it may produce a burning smell, indicating malfunctioning components or degraded transmission fluid causing internal overheating. When any of these transmission fault symptoms appear, the car owner should promptly visit a 4S shop or auto repair facility for inspection and repair. As the transmission is a core component, neglecting issues can lead to minor problems escalating into major ones, significantly increasing repair costs.
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