Torque converter slipping in automatic transmission
The torque converter is the component of an automatic transmission (AT) that connects the engine to the transmission. It works on the principles of hydrodynamics, transmitting torque from the engine to the gearbox through two impellers:
* Pump wheel: Driven by motor.
* Turbine wheel: Connected to the gearbox shaft.
Between the pump and turbine wheels there is an impeller, which regulates the transmission of torque.
When the torque converter slips, the pump wheel rotates faster than the turbine wheel. This occurs because the impeller becomes blocked or cannot transmit enough torque.
Causes of torque converter slippage:
* Friction lining wear: Friction linings engage with the impeller and provide transmission. Their wear can lead to slippage.
* Clogged automatic transmission fluid filter: A clogged filter restricts fluid flow, which reduces the pressure and ability of the torque converter to transmit torque.
* Solenoid Problems: The solenoids control the impeller and can cause slippage if they are faulty.
* Damaged freewheel: The freewheel allows the torque converter to disengage after a certain speed. If it is damaged, the torque converter may constantly slip.
*Low automatic transmission fluid level: Low fluid level can lead to insufficient pressure and torque converter slippage.
Symptoms of torque converter slippage:
* Increasing engine speed without accelerating appropriately: Slippage causes the engine to have to run faster to maintain the same speed.
* Jerky or delayed shifting: Slipping can cause power to be transferred slowly to the transmission, resulting in jerking or hesitation.
* Overheating of the automatic transmission fluid: Slipping creates additional friction and heat, which can lead to overheating of the automatic transmission fluid.
* Burnt smell: If there is severe slippage, burning odors of the friction material may appear.
If you are experiencing symptoms of torque converter slippage, it is important to see a mechanic as soon as possible. Repairing a slipping torque converter usually involves replacing damaged components or repairing the friction linings. Ignoring the problem can result in further damage to the transmission and costly repairs.