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.

遇到自動變速箱故障維修店應該如何進行呢?新孚美自動變速箱整理了維修技師的技術總結，供各位借鑒。

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.

自動變速箱沖擊分三種，入擋沖擊、升擋沖擊、降擋沖擊。

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

入檔沖擊

In gear impact

故障解析：在車子啟動的狀態下掛入D擋位或R擋車子會往前沖一下，并帶有咚一下的聲音，這種故障首先要判斷有沒有故障碼存在，如存在故障碼，對應相應的故障碼來判斷故障。如果沒有故障碼，那就要懷疑是變速器的油壓調節出現問題，即閥體問題。

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.

故障解決：如有故障碼，根據相應的故障碼換掉對應的配件;如是閥體問題，根據閥體受損程度修復或更換閥體。

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.

升擋沖擊

Upshift impact

故障解析：車輛在低速往告訴慢慢提升速度時，會隨著車速的提高和電腦的信號，以及發動機各方面的匹配值達到相應的數值時，才會實行換擋。但在某一擋位實行升擋的同時車子會像被什么東西托一下發出咚一聲，這就是升擋沖擊。升擋沖擊的原因有很多，比如節氣門信號不好、電腦板損壞、離合器磨損、閥體調壓閥故障等。基本維修過程應該是先判斷故障碼，沒有故障碼基本就是離合器和調壓閥的問題。

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.

故障解決：如有故障碼，根據相應故障碼維修，無故障碼，檢查離合器、調壓閥，修復或更換相應配件。

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.

降擋沖擊

Downshift impact

故障解析：顧名思義，降擋沖擊就是指車子從高速降到低速時，擋位也會隨著車速下降，在降擋過程中車輛會突然間頓一下，感覺像是被東西拖了一下。降擋沖擊通常是沒有故障碼的，但可以直接判斷就是變速器的問題，由于離合器工作不好和油壓調節問題，才會造成降擋沖擊故障。

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.

故障解決：排查離合器和閥體，根據零件受損程度進行修復或更換配件。

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