1： High engine speed during driving

這個問題包括平穩(wěn)行駛中一直轉速高，提速過程中轉速高兩種情況。 平穩(wěn)過程中轉速高比較容易測試，比方一部引擎排量2.0L的車輛平時在2600轉車速即可達到100公里，但一段時間內經常需要3000轉或更高才能達到100公里，則說明已出現(xiàn)此故障。

This problem includes two situations: high speed in smooth driving and high speed in acceleration. For example, a vehicle with 2.0 l engine displacement can reach 100 km at 2600 rpm, but it often needs 3000 rpm or higher to reach 100km in a period of time, which indicates that this fault has occurred.

一般這種故障是由于變速箱高速檔失效或者變扭器內部鎖止離合器失效引起的，需要立即檢修變速箱。

Generally, this kind of fault is caused by the failure of high speed transmission or locking clutch inside the torque converter, so it is necessary to overhaul the gearbox immediately.

提速過程中轉速過高，這個故障測試有點復雜，因為在提速過程中，引擎轉速的上升同加速踏板有著密切的關聯(lián)，比如一部正常的帕薩特在小油門的情況引擎一般提速到2500轉即可使車輛加速起來，但在全油門的情況下引擎需提升到5500-6000轉，如此巨大的反差是由于受變速箱電子控制系統(tǒng)的模糊邏輯來控制，所以這個標準需要一定的自動變速箱維修水準方可完成。

The engine speed is too high during the acceleration process. This fault test is a bit complicated, because during the acceleration process, the rise of engine speed is closely related to the accelerator pedal. For example, when the engine of a normal Passat is small, the engine can accelerate to 2500 rpm, but the engine needs to be increased to 5500-6000 rpm at full throttle. This huge contrast is due to It is controlled by the fuzzy logic of the transmission electronic control system, so this standard needs a certain professional automatic transmission maintenance level to complete.

二：車輛跑不起

2： The car can't run

車輛跑不起，這是駕駛人員的駕駛感受，車輛跑不起包括沒有高速，即無論如何行駛，車輛都不能達到100公里/小時。提速很慢，即油門踩的很重但車輛還是慢慢提速，反應很差、缺乏酣暢的感覺，這種情況又包括引擎提速很慢，即發(fā)動機的轉速上不來和轉速上的很快但車速不快兩種情況。所以這是個相對復雜的問題，正常的測試標準是車輛起步、適當踩加速踏板，引擎轉速平穩(wěn)提升，車輛加速，一般在2500轉左右，車速在25-30公里之間，自動變速箱進入換檔，引擎的轉速在適當回落后逐步回升，同時車速明顯加快，在車輛40公里時二次換檔，變速箱在進入三檔后，車速會進一步加快，在60公里的速段上會進入變速箱的高檔位，整個過程引擎在升檔的過程會適當回落后再次提起，無空轉、無打滑現(xiàn)象。

It is the driver's feeling that the vehicle can't run, including the lack of high speed, that is, the vehicle can't reach 100 km / h in any case. The acceleration is very slow, i.e. the accelerator is heavily stepped on, but the vehicle still accelerates slowly. The reaction is very poor and the feeling of soundness is lacking. This situation also includes two situations: the engine speed is slow, that is, the engine speed is not up and the speed is fast but the speed is not fast. Therefore, this is a relatively complex problem. The normal test standard is to start the vehicle, properly step on the accelerator pedal, the engine speed will increase steadily, and the vehicle will accelerate, generally around 2500 rpm, and the vehicle speed will be between 25-30 km. The automatic transmission will enter the first shift, and the engine speed will gradually rise after appropriate fall. Meanwhile, the speed will obviously accelerate. When the vehicle is 40 km, the engine will change its speed When the gearbox is in the third gear, the speed will be further accelerated, and it will enter the high gear of the gearbox at the speed of 60 km. During the whole process, the engine will be lifted again after appropriately falling back during the upshift process, without idling and slipping.

一般引擎排量在2.0左右的車輛平穩(wěn)行駛的情況下，引擎2500－3000轉時車速可以達到100公里的時速，如需要進一步提升車速，引擎轉速需要同步增加，如果引擎加油很悶、不順暢，一般說明引擎需要自動變速箱維修檢修，如果引擎加速有力則說明可能是變速箱內部檔位不對、離合器燒毀、變扭器出現(xiàn)機械故障等。

Generally, when a vehicle with an engine displacement of about 2.0 runs smoothly, the speed of the engine can reach 100 km / h at 2500-3000 rpm. If the speed needs to be further increased, the engine speed needs to be increased synchronously. If the engine refueling is very stuffy and not smooth, it generally indicates that the engine needs automatic transmission maintenance. If the engine accelerates strongly, it may be the internal gear of the gearbox Wrong position, burned clutch, mechanical failure of torque converter, etc.

三：入檔遲 入檔死火 入檔沖擊

3： Late gear in, dead fire in gear impact

測試入檔標準是啟動引擎、怠速、踩住剎車、入檔，正常的情況是1-1.2秒的時間內有入檔的感覺，放開剎車踏板，在不踩油門踏板的情況下車輛會慢慢起步并逐步提取到0-20公里/小時的車速，這是一部車正常的入檔標準，如果入檔后超過2秒鐘以上即定位入檔延遲 ，這種情況需要立即檢修；如果入檔有強烈的沖擊感覺即定位入檔沖擊，需要說明的是任何自動變速箱入檔都有一定程度的沖擊感覺，如果絲毫的感覺都沒有，反而說明內部有故障，但這個沖擊比較大則是不能夠接受的，引發(fā)該故障的原因很復雜，包括除變速箱以外的很多方面。入檔死火的情況是入檔時引擎會死火，這種問題在冷車時比較明顯，引發(fā)該故障有變速箱的原因也有其它車身系統(tǒng)的原因。

The standard of gear selection is to start the engine, idle, step on the brake and shift into gear. The normal situation is to feel the gear in within 1-1.2 seconds. Release the brake pedal, and the vehicle will start slowly without stepping on the accelerator pedal and gradually extract the speed of 0-20 km / h. This is a normal gear in standard for a car. If the gear is put into gear for more than 2 seconds, the gear in delay will be located This situation needs to be repaired immediately. If there is a strong impact feeling when shifting into gear, i.e. positioning impact, it needs to be explained that any automatic transmission has a certain degree of impact feeling when shifting. If there is no feeling at all, it indicates that there is an internal fault, but the impact is relatively large, which is unacceptable. The causes of the fault are very complex, including that except for the gearbox Many other aspects. The case of stalling in gear is that the engine will stall when it is in gear. This problem is more obvious when the car is cold. The fault is caused by the gearbox and other body systems.