Automatic vehicles are now becoming more and more popular with car enthusiasts due to their simplicity and convenience, and are gradually becoming a priority choice for buying a car. As we all know, automatic transmissions are not prone to problems, but when they fail, it's also a headache. Therefore, car owners need to pay more attention to maintenance during normal times, identify problems in a timely manner and solve them as soon as possible in order to avoid costly expenses and damage to transmission caused by overhaul.
An automatic transmission differs from a manual transmission in a common gear set mechanism. Its design includes several sets of friction and brake discs, and also uses a special hydraulic shaft. Therefore, for ordinary car owners, disassembling an automatic transmission transmission Both installation and technical maintenance requires professional knowledge and technology, but a simple method can be used to quickly assess pros and cons of its working conditions in order to cope with it in time.
1. Auto switch time is too long or too short. As a rule, automatic transmissions have certain shift speeds and vehicle speeds. If you find that shift time suddenly becomes too long or too short, this means that gear ratio of gearbox is disproportionate. At same time, you will feel that engine speed is too high. In addition, transmission does not change gears, indicating a problem with transmission.
Secondly, car skids or hits. If car does not move in D or R, or car reacts very slowly and then hits, or engine speed is high but speed is very low, it means that there is a problem with manual transmission. detail inside gearbox.
Thirdly, there is a specific smell in closet. The gearbox housing runs on hydraulic oil, when oil temperature is too high, it burns and these specific odors appear, which means that some of actuators in gearbox housing do not work properly.
Beware of pitfalls of automatic transmission repair market. If car's automatic transmission fails, car owner often takes car to a 4S shop for service. Some 4S shops usually do a preliminary evaluation before disassembly and inspection, and price is between 10,000 and 20,000 yuan (middle level). medium and high class cars) or from 30,000 to 40,000 (luxury cars), and after a real dismantling and inspection, actual quotation will more than double. Due to lack of professional equipment for maintenance and testing and technical strength for automatic transmissions, shops 4S has no other choice but to replace expensive internal transmissions. The price of components such as: valve body, torque converter, etc. is close to price of a new gearbox assembly, which often makes car owner unhappy. Some minor faults can be diagnosed as major repairs that cost a lot of money.
If you do not need to disassemble and repair, you can solve problems of automatic transmission tumbling, shock, slip, abnormal noise, high temperature, etc., which is undoubtedly best for car owners. an auto repair trap, but also saves cost of a major overhaul, not to mention damage to transmission performance. According to Automatic Transmission Maintenance Association, more than 90% of automatic transmission failures are caused by overheating of transmission fluid (ATF), resulting in ingrained contaminants and impurities in automatic transmission, valve body blockage, oil pressure cannot be controlled, and at same time, wear of transmission components follows. gears, upsets, bumps, slippage, noise, etc.
Combining causes of automatic transmission failures and shortcomings of transmission overhaul, Matti has released an overhaul and replacement-free automatic transmission to eliminate failures, bumps, skids, abnormal noises and high temperatures. If you introduce Madi products into car, you can solve above problems after 1000 km of run. According to technical data of German company Matti, Matti ATF can clean gearbox of stubborn dirt and contaminants within 15 minutes, does not corrode or damage O-ring in gearbox; Matti TA can enhance cleansing effect of ATF by thoroughly cleaning valve body blockages, eliminating stick-ups, bumps and skids; penetrating into metal surface to form a new layer of organic metal film, stabilizing and restoring wear state of transmission components, so that noise is greatly reduced or disappears; it contains highly effective antioxidants. With special inhibitors and special long chain polymeric fatty acids, it can control temperature more effectively, inhibit re-formation of dirty impurities, and significantly slow down "aging" of gear oil, extending oil change interval by 3-5 times.
Easy and quick identification of automatic transmission faults is important for quickly resolving automatic transmission problems. It is suggested that after an automatic transmission failure occurs, it should be repaired as soon as possible. Of course, if German Madi products can be used in advance, occurrence of a transmission failure can be prevented, and automatic transmission oil change cycle can be extended, which can save a lot of maintenance costs.