What does torque converter slip mean?

When the impeller spins, the moving oil pushes against the fins of the stator. Because there is no direct connection in the torque converter, the impeller will always spin faster than the turbine – a factor known as “slippage.” Slippage needs to be controlled; otherwise the vehicle might never move.

Can torque converters slip?

A malfunctioning torque converter can have a shudder that comes from the transmission. The slipping occurs while you’re driving or changing gears, and it usually comes with some odd noises too. When the torque converter starts malfunctioning, you may feel shuddering and even slipping in overdrive.

What causes torque converter failure?

Many torque converter failures can be caused by excessive friction, which means the torque converter’s needle bearings are damaged. Also, a faulty seals or faulty clutch solenoid can be to blame. A faulty seal can allow fluid to leak and become contaminated. A bad torque converter can damage a transmission.

At what speed does a torque converter lock up?

This energy loss is transmitted to the vehicle’s radiator and shed as heat. Recently developed torque converters have had a “lockup” feature added to reduce this energy loss and improve mpg. This lockup feature will not engage until the vehicle reaches approximately 40 mph.

What is a high stall torque converter?

A higher stall torque converter will let your car accelerate better because the car will be taking off at the rpm range where it is making the most power. ft of torque with a stock camshaft will produce a 2,000 rpm stall speed when a 2,000 stall speed converter is used.

How do you calculate a converter slip?

Lots of people ask what the math formula to figure out converter slip as a percentage. If you don’t want to use the Engine to Driveshaft ratio provided in most data loggers you can also use this formula: engine RPM minus Driveshaft RPM divided by the original engine RPM times 100.

How does torque converter lock up work?

Torque converter lock-up is engaged through a solenoid mounted inside the transmission. When the solenoid is energized it redirects the fluid flow back through the input shaft to put pressure against the clutch assembly allowing it to engage with the front of the torque converter.

What is torque converter slippage and why is it important?

Torque converter slippage is important during acceleration, but it becomes a liability once the vehicle reaches cruising speed. That’s why virtually all modern torque converters use a lock-up clutch. The purpose of the lockup clutch is to directly connect the engine and the transmission once slippage is no longer needed.

What causes the torque converter on an Audi A4 to slip?

The torque converter’s clutch begins to slip over time in Audi A4 and Audi A6 models. The root cause is typically a faulty seal and, after slipping for a short time, the clutch gets destroyed.

What happens if the torque converter seal is damaged?

If the torque converter seal is damaged, it could cause the transmission fluid within the bell housing to leak. When that happens, the torque converter will be unable to provide a smooth transfer of power from the engine to the transmission. As a consequence, there could be overheating, slippage, higher stall speeds, among other problems. 2.

What causes a torque converter clutch to go bad?

The root cause is typically a faulty seal and, after slipping for a short time, the clutch gets destroyed. On occasion, the clutch could also jam. If you are experiencing trouble with your torque converter clutch, you may feel a slight jolt when you’re driving as your Audi switches gears.