Automatic cars can be said to be favored by the majority of female car owners. Because the automatic transmission can automatically shift according to the speed of the engine, female drivers with poor driving skills can also control automatic gears. However, many car owners know little about the maintenance of the vehicle's automatic transmission. If they don't pay attention to maintenance during driving, the transmission is prone to failure. Once there is a problem with the automatic transmission, the maintenance is also very troublesome. Xiaobian summarized several easy faults of the transmission, all of which are very difficult problems!

1、起步或行駛有沖擊

1. Impact when starting or driving

故障情況：在起步時(shí)或行駛中、加速時(shí)汽車有明顯的沖擊感。

Fault condition: the car has obvious impact feeling when starting, driving and accelerating.

造成這樣故障的原因可能是：發(fā)動(dòng)機(jī)怠速過(guò)高；節(jié)氣門拉索或節(jié)氣門位置傳感器調(diào)整不當(dāng)，使主油路油壓過(guò)高；主油路調(diào)壓閥有故障，使主油路油壓過(guò)高；換擋執(zhí)行元件打滑；油壓電磁閥不工作；電腦有故障。

The causes of such faults may be: the engine idle speed is too high; Improper adjustment of throttle cable or throttle position sensor causes high oil pressure in the main oil circuit; The pressure regulating valve of the main oil circuit is faulty, which makes the oil pressure of the main oil circuit too high; Shift actuator slipping; The oil pressure solenoid valve does not work; There is something wrong with the computer.

2、入檔遲、入檔死、入檔沖擊

2. Late shift in, dead shift in and impact of shift in

故障情況：測(cè)試入檔標(biāo)準(zhǔn)是啟動(dòng)引擎、怠速、踩住剎車、入檔，正常的的情況是1－1.2秒的時(shí)間內(nèi)有入檔的感覺(jué)、放開剎車踏板，在不踩油門踏板的情況下車輛會(huì)慢慢起步并逐步提取到10－20公里/小時(shí)的車速，這是正常的入檔標(biāo)準(zhǔn)，如果入檔后超過(guò)2秒鐘以上即定位入檔延遲，這種情況需要立即檢修。

Fault condition: the test entry standard is to start the engine, idle, step on the brake and enter the gear. The normal situation is to feel like entering the gear within 1-1.2 seconds and release the brake pedal. Without stepping on the accelerator pedal, the vehicle will start slowly and gradually extract the speed of 10-20 km / h. This is the normal entry standard, If the gear in delay is located more than 2 seconds after gear in, this situation needs to be repaired immediately.

如果入檔有強(qiáng)烈的沖擊感覺(jué)即定位入檔沖擊，需要說(shuō)明的是任何的自動(dòng)變速箱入檔都有一定程度的沖擊感覺(jué)，如果絲毫的感覺(jué)都沒(méi)有，反而說(shuō)明內(nèi)部有故障，但這個(gè)沖擊比較大是不能夠接受的，而引發(fā)的這個(gè)問(wèn)題的原因就很復(fù)雜而且包括除了變速箱以外的很多方面。

If there is a strong impact feeling when shifting in, that is, the impact of positioning into gear, it should be noted that any automatic transmission has a certain degree of impact feeling when shifting in. 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 this problem are very complex, and include many aspects except the gearbox.

入檔死火的情況是入檔時(shí)引擎會(huì)死火，這種問(wèn)題在冷車時(shí)比較明顯，引發(fā)這個(gè)問(wèn)題有變速箱的問(wèn)題也有其他車身系統(tǒng)的問(wèn)題。

The situation of stalling is that the engine will stall when shifting in. This problem is more obvious when the car is cold. This problem is caused by the gearbox and other body systems.

3、引擎空轉(zhuǎn)

3. Engine idling

引擎空轉(zhuǎn)一般發(fā)生在兩種情況：

Engine idling generally occurs in two situations:

一是在車輛在平穩(wěn)種突然出現(xiàn)引擎空轉(zhuǎn)的現(xiàn)象，在車速慢下來(lái)又恢復(fù)正常，這種情況一般說(shuō)明變速箱在短的時(shí)間內(nèi)突然從高的檔位降為低檔位，問(wèn)題有可能處在控制系統(tǒng)或者散熱系統(tǒng)上，變速箱本身沒(méi)有問(wèn)題。

First, the engine idling occurs suddenly when the vehicle is stable and returns to normal when the vehicle speed slows down. This generally indicates that the gearbox suddenly drops from high gear to low gear in a short time. The problem may lie in the control system or heat dissipation system, and the gearbox itself has no problem.

二是在加速的過(guò)程中或者在換檔的過(guò)程中出現(xiàn)短暫的打滑空轉(zhuǎn)現(xiàn)象，直觀的感覺(jué)是后者沒(méi)有前者那么厲害，實(shí)際上確實(shí)恰恰相反，后者的問(wèn)題多半處在變速箱內(nèi)的離合器等相關(guān)環(huán)節(jié)上，處理起來(lái)要對(duì)變速箱進(jìn)行解體檢修，時(shí)間成本消耗都要比前者多出許多。

Second, there is a short slip and idling phenomenon in the process of acceleration or gear shifting. The intuitive feeling is that the latter is not as powerful as the former. In fact, it is exactly the opposite. Most of the problems of the latter lie in the clutch and other related links in the gearbox. It is necessary to disassemble and repair the gearbox, and the time and cost consumption are much more than the former.

6行駛中引擎轉(zhuǎn)速高

6 high engine speed during driving

這個(gè)問(wèn)題也包括平穩(wěn)行駛中一直轉(zhuǎn)速高和提速過(guò)程中轉(zhuǎn)速兩種情況：

This problem also includes two situations: high speed during smooth driving and high speed during acceleration:

一、平穩(wěn)過(guò)程中轉(zhuǎn)速高，這種情況比較容易測(cè)試，比方一部引擎排量2.0的車輛平時(shí)在2600轉(zhuǎn)即可車速達(dá)到100公里，如果一段時(shí)間經(jīng)常需要3000轉(zhuǎn)或更多方可以達(dá)到100公里，則說(shuō)明有故障，一般這種故障是由于變速箱高速檔失效或者變鈕器內(nèi)部鎖止離合器失效引起的，需要立即檢修變速箱。

1、 The rotating speed is high during the stationary process, which is easy to test. For example, a vehicle with an engine displacement of 2.0 can reach 100 km at 2600 rpm. If it often needs 3000 rpm or more to reach 100 km for a period of time, it indicates that there is a fault. Generally, this fault is caused by the failure of the high-speed gear of the transmission or the failure of the lock up clutch inside the knob, The transmission needs to be serviced immediately.

二、提速過(guò)程中轉(zhuǎn)速高，這個(gè)故障測(cè)試有點(diǎn)復(fù)雜，因?yàn)樵谔崴龠^(guò)程中，引擎的轉(zhuǎn)速的上升同加速踏板有者密切的關(guān)聯(lián)，比方一部正常的帕撒特在小油門的情況引擎一般體速到2500轉(zhuǎn)即可把車輛加速起來(lái)，但在全油門的情況引擎會(huì)提升到5500－6000轉(zhuǎn)，如此巨大的反差是由于變速箱的電子控制系統(tǒng)的模糊邏輯來(lái)控制，所以這個(gè)標(biāo)準(zhǔn)需要一定的水準(zhǔn)方可完成。

2、 The speed is high during the acceleration process. This fault test is a little complicated, because during the acceleration process, the increase of engine speed is closely related to the accelerator pedal. For example, a normal Passat can accelerate the vehicle when the engine body speed is 2500 RPM under the condition of small throttle, but the engine will increase to 5500-6000 RPM under the condition of full throttle, Such a huge contrast is due to the fuzzy logic control of the electronic control system of the gearbox, so this standard needs a certain level to be completed.

相應(yīng)的解決方法：

Corresponding solutions:

1、檢查自動(dòng)變速器油油面高度。若太高或太低，應(yīng)調(diào)整至正確高度。

1. Check the automatic transmission oil level. If it is too high or too low, adjust it to the correct height.

2、應(yīng)舉升器將汽車升起，起動(dòng)發(fā)動(dòng)機(jī)，在空檔、前進(jìn)檔、倒檔等狀態(tài)下檢查自動(dòng)變速器產(chǎn)生異響的部位和時(shí)刻。

2. Lift the vehicle with the lifter, start the engine, and check the position and time of abnormal noise produced by the automatic transmission under the conditions of neutral, forward, reverse, etc.

3、若在任何檔位下自動(dòng)變速器前部始終有連續(xù)的異響，通常為油泵或液力變矩器異響，對(duì)此，應(yīng)拆檢自動(dòng)變速器，檢查油泵有無(wú)磨損、液力變矩器內(nèi)有無(wú)大量摩擦粉末。如有異常，應(yīng)更換油泵或液力變矩器。

3. If there is a continuous abnormal sound at the front of the automatic transmission in any gear, usually the abnormal sound of the oil pump or hydraulic torque converter, disassemble and inspect the automatic transmission to check whether the oil pump is worn and whether there is a large amount of friction powder in the hydraulic torque converter. In case of abnormality, replace the oil pump or hydraulic torque converter.

4、若自動(dòng)變速器只有在行駛中才有異響，空檔時(shí)無(wú)異響，則為行星齒輪機(jī)構(gòu)異響。對(duì)此，應(yīng)自動(dòng)變速器，檢查行星齒輪機(jī)構(gòu)各個(gè)零件有無(wú)磨損痕跡、齒輪有無(wú)斷裂，單向超越離合器有無(wú)磨損、卡滯，軸承或止推墊片有無(wú)損壞。如有異常，應(yīng)予以更換。

4. If the automatic transmission makes abnormal noise only during driving and there is no abnormal noise in neutral, it is the abnormal noise of planetary gear mechanism. In this regard, the automatic transmission shall be used to check whether all parts of the planetary gear mechanism have wear marks, whether the gear is broken, whether the one-way overrunning clutch is worn or stuck, and whether the bearing or thrust gasket is damaged. If there is any abnormality, replace it.

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