The four signs of a bad gearbox are: gear shifting time is too long or too short, gearbox oil leakage, gearbox slipping and inability to accelerate, and gearbox slugging and making strange noises. details as follows:
1. Shift time is too long or too short
Generally, automatic transmissions have specific shifting speeds and vehicle speeds. If you find that the shifting time is suddenly too long or too short, it means that the transmission ratio of the transmission is out of proportion. At the same time, you will feel that the engine speed is too high, and even worse. In a serious case, the gearbox does not shift gears, or the gear shift is delayed, which indicates that there is a problem with the gearbox.
Solution: The car owner needs to send the car to a repair shop to inspect the gearbox and repair the control unit, control valve body and other parts of the gearbox.
2. Gearbox oil leakage
The reason is due to the aging of the seals and poor sealing. It may also be caused by poor manufacturing processes that cause trachoma in the shell.
Solution: The seals of the gearbox should be checked in time and replaced according to the actual situation.
3. The gearbox is slipping and unable to accelerate.
While the car is driving, there is the sound of the engine idling when the accelerator pedal is used to increase the speed. The speed of the car does not increase, and the entire car feels weak. This phenomenon is mostly caused by the clutch plate being burned. If water enters the gearbox due to external reasons, it will cause the gearbox to work abnormally. This may be due to oil leakage from the water tank, or water leaking from the gearbox breathable cap. Enter.
Solution: Clean the moisture inside the gearbox and replace the clutch plate.
4. The gearbox is sluggish and has a peculiar smell and noise.
In daily use, the gearbox oil level is low or deteriorated, the gear meshing clearance is too large or too small, the gear meshing is poor, the bearing clearance is too large, etc., which will cause abnormal noise in the gearbox. The gearbox body relies on hydraulic oil to work. When the oil temperature is too high, some combustion will occur, and these odors will come out. This means that some executive components in the gearbox body are not working properly, or the performance of the gearbox oil has declined. causing the internal temperature to rise.
Solution: When there is abnormal noise in the gearbox, the car owner should promptly go to the 4S shop or auto repair shop for inspection and replace the corresponding parts according to the fault problem.
Post time: Oct-10-2023