Nissan Sylphy 20 19 vehicles are prone to frustration when the temperature is too high in summer. Why not when it is cold?

In many cases, the damage is not the internal valve body, but the stubborn dirt and impurities inside the valve body, especially the dirt and impurities inside the valve body gather to form a blockage, which leads to the failure to effectively adjust the oil pressure and lead to the occurrence of bumping and slipping. At the same time, the problem of high gearbox temperature can not be ignored. According to the data of automatic transmission maintenance association, "more than 90% of all faulty automatic transmissions are caused by overheating."

High temperature will destroy the quality and friction characteristics of transmission oil, increase friction and wear, and the noise of transmission will follow. At the same time, sludge (impurities or dirt) will also be produced inside the transmission (such as the valve body), which will lead to the frustration and impact of the transmission. If the temperature exceeds 120℃, the rubber sealing material will start to harden, which will eventually lead to leakage and reduce the hydraulic pressure. If the temperature is higher, the gearbox will start to slip, which will increase the temperature. (Audi and other high-end models will call the police and enter the gearbox protection mode. If it is not solved in time, the gearbox will be scrapped.

Therefore, only by removing stubborn dirt and impurities in the gearbox and effectively controlling the working temperature of the gearbox can the gearbox problem be completely solved and prevented from happening again. This is also the key to solve the gearbox failure without disassembly or repair.