Automatic transmission shift impact how to do. The impact fault of automatic transmission refers to the strong vibration and impact feeling of the car at the moment when the car starts or moves into gear or shifts.

遇到自动变速箱故障维修店应该如何进行呢?新孚美自动变速箱整理了维修技师的技术总结，供各位借鉴。

In case of automatic transmission failure, how should the repair shop carry out? This paper summarizes the technical summary of the maintenance technicians for your reference.

自动变速箱冲击分三种，入挡冲击、升挡冲击、降挡冲击。

There are three types of impact in automatic transmission, i.e. in gear impact, upshift impact and downshift impact.

入档冲击

In gear impact

故障解析：在车子启动的状态下挂入D挡位或R挡车子会往前冲一下，并带有咚一下的声音，这种故障要判断有没有故障码存在，如存在故障码，对应相应的故障码来判断故障。如果没有故障码，那就要怀疑是变速器的油压调节出现问题，即阀体问题。

Fault analysis: when the car is in D gear or R gear, the car will rush forward with the sound of thump. First of all, we should judge whether there is a fault code. If there is a fault code, we should judge the fault according to the corresponding fault code. If there is no fault code, it is suspected that there is a problem with the oil pressure regulation of the transmission, that is, the valve body.

故障：如有故障码，根据相应的故障码换掉对应的配件;如是阀体问题，根据阀体受损程度修复或更换阀体。

Troubleshooting: if there is a fault code, replace the corresponding accessories according to the corresponding fault code; if there is a valve body problem, repair or replace the valve body according to the damage degree of the valve body.

升挡冲击

Upshift impact

故障解析：车辆在低速往告诉慢慢提升速度时，会随着车速的提高和电脑的信号，以及发动机各方面的匹配值达到相应的数值时，才会实行换挡。但在某一挡位实行升挡的同时车子会像被什么东西托一下发出咚一声，这就是升挡冲击。升挡冲击的原因有很多，比如节气门信号不好、电脑板损坏、离合器磨损、阀体调压阀故障等。基本维修过程应该是先判断故障码，没有故障码基本就是离合器和调压阀的问题。

Fault analysis: when the vehicle slowly increases its speed at a low speed, it will shift only when the matching value of the speed, the computer signal and the engine reaches the corresponding value. But at the same time of upshifting in a certain gear, the car will sound like something holding it. This is upshifting impact. There are many reasons for upshift impact, such as bad throttle signal, computer board damage, clutch wear, valve body pressure regulating valve failure, etc. The basic maintenance process should be to judge the fault code first. If there is no fault code, it is basically the problem of clutch and pressure regulating valve.

故障：如有故障码，根据相应故障码维修，无故障码，检查离合器、调压阀，修复或更换相应配件。

Troubleshooting: if there is a fault code, repair it according to the corresponding fault code. If there is no fault code, check the clutch and pressure regulating valve, repair or replace the corresponding accessories.

降挡冲击

Downshift impact

故障解析：顾名思义，降挡冲击就是指车子从高速降到低速时，挡位也会随着车速下降，在降挡过程中车辆会突然间顿一下，感觉像是被东西拖了一下。降挡冲击通常是没有故障码的，但可以直接判断就是变速器的问题，由于离合器工作不好和油压调节问题，才会造成降挡冲击故障。

Fault analysis: as the name suggests, downshift impact means that when the car is downshifted from high speed to low speed, the gear will also decrease with the speed. In the process of downshifting, the car will suddenly pause and feel like being dragged by something. Downshift impact usually has no fault code, but it can be directly judged that it is the problem of the transmission. Because the clutch is not working well and the oil pressure adjustment problem, it will cause downshift impact fault.

故障：排查离合器和阀体，根据零件受损程度进行修复或更换配件。

Troubleshooting: check the clutch and valve body, repair or replace parts according to the damage degree of parts.