Nowadays, a car is a commonplace vehicle. The global auto industry does not stand still and every year pleases speed lovers with interesting new products. One of these at one time was an automatic gearbox (automatic transmission).
What is this mechanism liked by most motorists? Everything is very simple. It is the automatic transmission that is optimal for driving in the city (stops at traffic lights, rush hour). Those who are used to driving a car in a sports style should better refuse from the “automatic machine”.
Unfortunately, many motorists in the manner of their driving cause various automatic transmission malfunctions. This article will focus on the types of malfunctions of the "machine." Plus, consider the signs of a malfunction in the automatic transmission.
So, if you began to notice something was amiss in your car and associate this malfunction with the gearbox, you should first go to the service station for the “automatic transmission diagnostics" operation and check the level of the transmission fluid.
Do not disregard automatic transmission operation indicators. For example, you notice that the O / D or O / D OFF mode blinks randomly for no reason. This suggests that there are some problems associated with the gearbox electronics.
It is not possible to detect automatic transmission failures of this type on their own. Here you will need to diagnose the automatic box using special equipment.
Many motorists ask the same question: "Is it possible to fix the problem in an automatic transmission by yourself?" Yes, you can, but you should know the exact reason.
Do not forget that the design of the “machine” is a complex device with many nodes. The best diagnosis at home is to monitor engine speed during gear changes. In normal mode, the “machine” throws the gear up at 1.5 - 2 thousand revolutions per minute. This is provided if you adhere to a moderate riding style on a flat road.
If your automatic transmission is equipped with electronic control, gear shifting should not be accompanied by extraneous sounds. The only criterion by which you can notice a shift to a higher gear is the tachometer readings. At the slightest deviation, you must immediately act, because in the near future, a slight malfunction can lead to the replacement of the entire gearbox. Indeed, this joke is bad.
Let's talk in more detail about what automatic transmission malfunctions occur most often and what sounds they are accompanied by.
Do you notice a sound similar to a howling siren? It is worth paying attention to the torque converter. If the sound is heard only during the parking test of a malfunction of the automatic transmission, do not worry. It so happens that there is a howl of “automatic” when the car is parked and while gaining momentum. In most cases, the cause may be a low oil level. Wear on the rings and gaskets of the oil pump is not ruled out.
If you recently replaced the gear in the car, then it may be improperly installed. With pressure on the ears, buzzing sound that changes with engine speed, attention should be paid to the oil seals. Maybe there is a problem with the valve spool with which the oil pressure is adjusted.
Many motorists get a rattling sound that is heard when the engine has not yet reached high revs. There are two explanations: either the damping springs in the torque converter flew, or the turbine pump blades. In the event that the sound when changing gears changes its tone and does not disappear in the future, most likely the problem is in the bearings.
In any case, automatic transmission failures can be repaired. It is best to turn to specialists in this matter. You need to remember several situations that negatively affect the automatic transmission:
- extreme braking;
- towing other cars;
- a sharp gear shift.
Avoiding such actions, you will significantly increase the life of the automatic transmission.