Quickly identify automatic transmission faults


Nowadays, auto-shift cars are increasingly favored by riders due to their simple and convenient advantages, and they gradually become the first choice for cars. As we all know, the automatic transmission is not prone to problems, but once it fails, it is also a headache. Therefore, vehicle owners need to pay more attention to maintenance and find problems in a timely manner so that they can be solved as soon as possible to avoid expensive repairs and damage to the gearbox.

Quick identification of automatic transmission failure Automatic transmission is different from the manual transmission of the general gear train mechanism. Its structure includes multiple sets of friction plates and brake pads, while using a special hydraulic shaft, so for the average owner, automatic transmission The dismantling and maintenance of the box requires professional knowledge and technology, but a simple method to quickly determine the merits of its working conditions in order to deal with in a timely manner.

First, the automatic shift time is too long or too short. General automatic gearboxes have specific shifting speeds and speeds. If a sudden shift is found to be too long or too short, this means that the transmission ratio of the gearbox is disproportionate, and the speed of the engine is too high. What's more, the gearbox is not shifting, which shows that the gearbox is out of order.

Second, the car slipped or impacted. If the D or R gear does not move, or if the car reacts very slowly, or if the engine speed is high but the vehicle speed is very slow, it means that there is something wrong with the mechanical transmission inside the gearbox.

Third, the smell generated inside the box. The gear box body is operated by hydraulic oil. When the oil temperature is too high, some combustion will occur and these odors will be transmitted. This means that some of the actuator components in the gearbox are not working properly.

Beware of the pitfalls of the automatic gearbox repair market. The automatic transmission of the car has malfunctioned. The owner often drives the car to the car 4S shop for repairs. Some 4S shops generally offer advance quotations before the inspection, and the prices are between 1-2 million (intermediate sedan and mid-level sedan). Or 3-4 million (luxury cars), and after the actual inspection, the actual quotation will have more than doubled, precisely because of the lack of automatic transmission professional maintenance testing equipment and technical force, 4S shop forced to replace the high internal gearbox Price components, such as valve bodies, torque converters, etc., are close to the price of a new gearbox assembly, often leaving the owner miserable, and some very small faults may be diagnosed as overhauls. money.

If you do not need to repair, you will be able to solve the problems of automatic gearbox setback, impact, slippage, abnormal noise, high temperature, etc. For the owner, it is undoubtedly the best, both bypassing the trap of auto repair, but also saving the cost of major repairs. , not to damage the performance of the gearbox. According to data from the Automatic Transmission Maintenance Association, more than 90% of automatic transmission faults are caused by overheating of Automatic Transmission Fluid (ATF), resulting in stubborn dirt and impurities in the automatic transmission, and clogging of the valve body. The oil pressure cannot be controlled. At the same time, the components of the gearbox are worn out, followed by setbacks, shocks, slippage, and noise.

Quick and easy identification of automatic transmission faults is important for quickly resolving problems with automatic transmissions. If automatic transmission faults occur, they should be resolved early.

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