Let’s talk about the causes of some malfunctions of automatic transmissions, which are used on used in-demand car brands.
What is an automatic transmission? An automatic transmission, is a car transmission that provides automatic speed selection without the direct involvement of the driver.
Simply put, an automatic transmission can be called any kind of gearbox in which gear shifting is automatic, without the participation of the driver.
Any mechanism has its advantages, disadvantages and peculiarities of operation. So it is with the automatic transmission. In the same way, the automatic transmission has both pros and cons.
Smooth and automatic shifting of gears, creating comfort for the driver. Complexity of design.
No need for periodic replacement of the clutch. High cost of the box itself.
Good dynamics due to the possibility of manual gear shifting. High cost of its maintenance.
Automatic machine can adjust to the driving style of the driver (adapt). Lower efficiency and increased fuel consumption in comparison with the manual.
While using GM 4T65E box on a vehicle with all-wheel drive, it has difficulties with slipping, especially in winter and off-road.
As a result of the slippage, the differential is likely to break and will need to be replaced. This happens because the satellites cannot withstand overheating and “burn” to the pin. The gears collapse in the middle of the automatic transmission and the car stops.
Once upon a time, spare parts for such gears were ordered from the USA. It was cheaper. But nowadays car owners try to buy a complete unit at scrap yards. But it’s hard to guess at its remaining life.
Let’s consider another automatic transmission – Multitronic assembled by the German Audi automobile company. The main reason of this automatic transmission failure is not exploitation errors – its simply was expired. Experts believe that the life of this automatic transmission is about 200 thousand km. mileage, and after that a necessary repair is needed.
But this repair won’t end with chain replacement. It will be necessary to change a clutch pulley with clutch packings in addition to the chain and soothers.
There are a lot of used versions of Audi with Multitronic on the car markets.
For this reason, if the mileage of the car on the speedometer around the alarming value, it is required before acquiring such a copy to make sure the serviceability of the automatic transmission.
Find out: whether there was repair of transmission before or not. If there was no repair – you should think over the purchase of this car, or be ready to do the automatic transmission repair yourself.
This transmission was put on the modification Ford C-MAX with a diesel engine and showed itself to be very unreliable in use and difficult to repair. (from abw-by.ru).
Its resource of exploitation reaches only 150 thousand km. Then as a rule there is a turbine shaft rupture.
It is very difficult to find a “used” gearbox. And getting a “contract” unit will cost $6000, which is about the cost of a half of a car. Therefore, before buying a diesel Ford C-MAX it is necessary to think seriously about the consequences.
It’s time to get acquainted with a regular customer of repair shops – the automatic transmission from the Honda company. Japanese automatic transmissions suffer from aggressive driving, since they have weak cooling system. Therefore, overheating of the transmission occurs rather quickly. It is necessary to apply additional radiators to these automatic transmissions for their cooling. In addition, it is necessary to use only original oils, provided by the factory.
The mistake of Japanese engineers is complicated by the created way for this car brand – all owners tend to drive at high speed. For this reason, when operating Honda cars with an automatic transmission, it is recommended to pay close attention to this topic and solve the issue with additional cooling of the automatic transmission.
All firms-manufacturers of cars are trying to calculate the exact service life of each node in the cars, whether it is transmission, engine or suspension elements. Based on the calculations, they provide a warranty, which generally does not exceed 100-150 thousand km mileage of the car. In this case the service life of automatic transmissions can not be higher than 150-200 thousand.
In modern cars, there is no safety factor, as well as in automatic transmissions. The first owner of a car usually doesn’t feel any difficulties, but the next one will be in trouble…