Torque Converters
The engine in your vehicle may do most of the work, but it could not do much without a number of other components. Each one of them is important to driving, and maintaining them to ensure they are in their best possible condition is very important. Failing to replace parts when they are about to break down can cause you serious problems and cost you a lot of money, and one of the important parts you need to monitor is the torque converter.
The torque converter in your vehicle is essentially a replacement for the clutch in a manual vehicle, because the transmission cannot safely change gear while connected to the engine. However, unlike a clutch, a torque converter is a highly complex component that allows the power to remain, rather than dropping off, which can help with fuel economy while protecting the engine and gearbox. As we said, the amount of work your torque converter performs requires it to be a very strong component, and it achieves this strength with very high quality steel components. Inside the torque converter is a turbine, pump and transmission fluid. As you accelerate, the turbine is spun faster and faster by the flywheel on the engine, which causes the transmission fluid to be spun to the outside of the torque converter's housing.
As this happens, more and more fluid is drawn into the system, which will then cause the turbine to spin faster so that the transmission internals begin spinning and sending power to your wheels.Being such a complex component means your torque converter can experience problems, and you will experience them if you have your vehicle for long enough or you allow the transmission fluid to reach a low level. Some of the problems can include things like the torque converter not having enough fluid to spin properly, so your transmission is not able to send any power to the wheels, or the turbine fans beginning to crack or wear. Of course, the housing itself can crack under serious pressure which will cause a leak of transmission fluid. None of these problems can be ignored, so you want to keep your eyes and ears open for symptoms.One of the most common symptoms is slippage, which means you are accelerating and the engine revs are increasing, but the vehicle is not going anywhere. This can be followed by a loud thud and it may feel like the transmission has finally selected a gear, but is usually a sign of low or hot transmission fluid. If you feel like you are driving down a seriously rough road every time you accelerate then this can also be a problem with the transmission fluid or the pump, and it is the same if the transmission and engine begin to overheat without another reason.