What should I do if the automatic transmission stalls halfway? 

A car equipped with an automatic transmission does not have a clutch, which fundamentally avoids accidental engine flameouts caused by improper operation. However, some automatic transmission models may still be accidentally flamed out due to mechanical failures. In this case, if there is no situation ahead, you can restart without stopping. The specific method is to quickly push the shift lever into neutral (N), turn the ignition switch to the start (START) position, and after the restart is successful, quickly pull the shift lever to the D lever to drive normally. If the engine still fails to start after repeated attempts, it means that the fault is serious, and it should be stopped for maintenance decisively. To apply this method, you must be familiar with the operation of the vehicle. If you push the gear lever directly into the reverse gear (R) with too much force, it will cause great damage to the transmission. In some vehicles, the ignition switch has a function to prevent secondary starting. function, it must be turned back to the closed position before restarting, but be careful not to lock the steering wheel. In addition, after the engine is turned off, the brake and steering power will also fail. At this time, more power is needed to control Stay in the vehicle. All of these are usually clear to everyone, but in an emergency, it is inevitable to be in a hurry. Therefore, if you are a novice, it is best to park your car on the side of the road in a down-to-earth manner. Remember: At any time, vehicles equipped with automatic transmissions cannot use anti-drag start.

There are currently three ways to deal with problems with gearboxes: the assembly replaces the original gearbox, repairs and regeneration.

The advantages and disadvantages of the three methods are as follows: 1. Replacement. At present, what people replace is the gearbox produced by the original factory for replacement. Those who have replaced it should know that the original box has less goods and higher price. Not to mention the high price of replacing the original factory gearbox and the fact that it is not always possible to get a gearbox. Generally, the original factory produces a certain number of them. Second, maintenance. Compared with the replacement of the original gearbox, the maintenance cost is relatively much lower, but the maintenance of the automatic transmission is the most complicated system in the whole vehicle repair, not all repair shops can repair it, especially some small gears are more expensive. It can only be disassembled and assembled, try your luck, and the success rate is extremely low. Some maintenance factories with technical strength have technology, but lack maintenance equipment, and the price of professional equipment is not affordable by ordinary maintenance factories. 3. Recycling enterprises repair and manufacture gearboxes. In recent years, a nascent industry has emerged between the replacement of the original gearbox and the maintenance of the gearbox - the gearbox regeneration enterprise. This kind of regeneration enterprise is derived from gearbox maintenance enterprises. They use original parts and repair and manufacture gearboxes with regeneration standards. Their technology is quite mature, especially the AT with a large circulation on the market, it can be said that the success rate has reached 95% or even higher; and most of them appear in the form of enterprises, their capital is relatively strong, the investment in equipment is relatively professional, relatively As far as 4S shops and repair shops are concerned, they have personnel, technology and equipment. The price of such enterprises is lower than the replacement assembly cost of the original factory, higher than that of the small maintenance factory, the quality and cost performance are relatively high, and most of them have supporting after-sales service. It is understood that among the automatic wave regeneration enterprises, the powerful companies have been able to provide the replacement of the general name of regeneration, and the success rate of getting on the car is extremely high. For example, Shanghai Fumei in China can provide the general name replacement of 01N, 4T65E and other gearboxes.

Maintenance knowledge

1. Frequently check whether the automatic transmission fluid level is normal. Start the engine, preheat the gearbox oil to about 50°C, and then put the gear selector in 

each gear for 2 seconds and then put it in the parking gear. If it is not enough, oil of the same quality should be added in time. 2. Master the replacement cycle of

 automatic transmission oil. The oil change interval of most automatic transmissions is generally two years or 40,000 to 60,000 kilometers (the vehicle manual shall 

prevail). It is recommended to change the oil 2-3 thousand kilometers in advance. 3. Correctly replace the transmission oil. By 2010, the better oil change method is

dynamic oil change, using special gearbox oil change equipment, fully circulating the old oil during the operation of the gearbox, draining it clean and then adding 

new gearbox oil, so that The oil change rate is as high as 90%, ensuring a good oil change effect. Car owners should cultivate the awareness of active inspection, 

maintenance, and maintenance. They can learn some basic knowledge of car maintenance and maintenance, carefully read the instructions for use with the car, and

 remember some necessary data. Only by maintaining a car scientifically can we ensure that the vehicle is in good technical condition and driving safety.

operation method

The advent of automatic transmissions eased the driver's sense of tension when driving a car. Since there is no need to change gears during driving, the driver can 

concentrate on observing the situation around the vehicle, and thanks to the precise electronic control device, the automatic transmission can not only adapt to

 various driving conditions, but also to different driving styles. This means that the shifting timing depends on the driving style, engine load, vehicle speed and

 engine speed, so that the available power of the engine is fully utilized. Taking the four-speed automatic transmission of Jetta Urban Pioneer as an example, the

 operation method and key points of the automatic transmission will be introduced to you. The shift lever and gear positions of the four-speed automatic transmission

 are shown in the figure. The gear symbols are P, R, N, D, 3, 2, 1 respectively. P (PARK)—Park For safety reasons, always put the shift lever in position P before leaving 

the car, especially when performing maintenance, especially when the engine is running. In the gear position P, the automatic transmission is in neutral, and the

 mechanical lever will lock the output shaft to prevent the car from slipping. Of course, the shift lever can only be placed in the gear position P when the vehicle is 

completely stopped. . The shift lever is controlled by a locking device controlled by an electromagnet. Therefore, only by applying the foot brake and pressing the

 button on the side of the shift lever can the shift lever be moved out of gear position P to ensure safety needs. Many cars are also equipped with an interlock device, 

and the key can only be pulled out if the shift lever is put into the gear position P. The parking gear P cannot completely replace the hand brake. When parking for a

 long time or on a slope, the hand brake must be used. Otherwise, the automatic transmission locking mechanism may be easily damaged. R (REVERSE)—The reverse

 gear can only be engaged or exited after the vehicle has stopped completely, otherwise it will cause early wear and tear of the automatic transmission.

 N (Neutral)—Neutral If the vehicle needs to be pushed or towed, the gear N must be selected. When towing the vehicle, the towing speed should not exceed 

50km/h, and the towing distance should not exceed 50km, otherwise, the automatic transmission will be damaged. Planetary gear mechanism. When the vehicle is

 stationary and the ignition switch is on, the brake pedal must be depressed and the side button of the shift lever must be pressed to shift out of gear N. When the 

vehicle is running and the vehicle speed is >5km/h, just press the side button of the shift lever to shift out or shift into gear N. D (DRIVE) - Driving gear Only by stepping

 on the brake pedal and pressing the button on the side of the gear lever, can the gear lever be moved out of the gear position P or N and shifted into the driving gear

. Gear position D is the most commonly used gear position. In gear position D, the automatic transmission first selects first gear to start the vehicle, and then gradually

 shifts to first gear, third gear and finally fourth gear at appropriate moments according to signals such as accelerator opening and vehicle speed. . Similarly, when the 

vehicle decelerates, the automatic transmission will automatically downshift from the corresponding gear. 3—Slope gear If gear 3 is selected, the transmission is only

 allowed to go up to gear 3 during driving. This gear can be selected in case of a slope. At this time, the automatic transmission will automatically switch between gears

 1, 2 and 3. Implement shifting. When going downhill, select this gear to make use of the braking effect of the engine. 2—Long slope gear If gear 2 is selected, the 

transmission is only allowed to move up to gear 2 during driving. This gear is very useful when driving along long slopes with many curves, otherwise, the automatic 

transmission may be replaced frequently Gear position, select this gear when going downhill, you can use the engine to brake. 1—Select gear 1 for steep slope gear, 

the vehicle will always drive in gear 1, and the gearbox will not move to other gears, so that the braking force of the engine can be maximized, so this gear can be 

selected when going down a steep slope. Gear 1 can only be selected when the vehicle speed is lower than 30km/h. Forced low gear switch The automatic transmission 

is equipped with a forced low gear switch. For rapid acceleration, the accelerator pedal must be pressed to the bottom to engage the forced low gear switch to achieve

rapid acceleration. At this time, the automatic transmission will drop a gear to adapt to the The need for rapid acceleration, or the engine does not upshift until it 

reaches a higher RPM.

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