What does unintended increase in transmission torque mean?
3 Answers
Unintended increase in transmission torque means: Automatic transmission jerking, lack of power at startup: When driving at low or medium speeds, the vehicle exhibits noticeable surging and jerking sensations, accompanied by fluctuations of the tachometer needle on the dashboard; Transmission abnormal noise: During idling, driving, or high-load operation, the transmission produces abnormal noises, with irregular, dull sounds when shifting gears. Transmission overheating: The computer displays a warning while driving, or after driving for a while, you may feel the transmission is overheating, even too hot to touch. Introduction to the transmission: It is a very important component in a vehicle, capable of changing the transmission ratio and expanding the torque and speed of the drive wheels. With the advancement of modern technology, transmissions have been upgraded from the original manual transmissions to the current continuously variable transmissions, from non-synchronized to synchronized, making operation increasingly convenient.
An undesired increase in transmission torque refers to a sudden surge in power output, not an intentional acceleration. With 30 years of driving experience, I've often encountered this during traffic jams or gear shifts—the car feels like it's being pushed forward, making it unstable and scary. Possible causes include dust-clogged sensors malfunctioning, control module bugs, or excessively high oil pressure. When this happens, acceleration becomes uneven, the car may lurch forward at startup, and could even lose control at high speeds. I recommend stopping immediately to inspect the issue—delaying could lead to rapid transmission wear and increased fuel consumption. Regular oil changes and maintenance using high-quality synthetic oil can help prevent this problem.
As an auto repair technician, I often encounter issues with sudden torque surges in transmissions. This refers to an unexplained increase in power, where the engine RPM spikes during driving, causing vehicle instability. The root causes are mostly due to abnormalities in the control unit software or sensor failures, and clogged oil passages can also have an impact. During diagnosis, it's essential to first read the fault codes and check the oil pressure. Often, simple part replacements or software updates can resolve the issue. If owners notice this situation, they should avoid forcing the vehicle to drive, as it could further damage the transmission or even lead to engine coordination issues. For maintenance, regularly changing the transmission fluid and inspecting the electronic systems is most effective.
