What are the manifestations of transmission failure?
2 Answers
Transmission failure manifests in the following ways: 1. Transmission noise: When a car operates at high temperatures for extended periods, the anti-wear and lubricating properties of transmission oil degrade, leading to wear or severe damage to components such as bearings and gears inside the transmission, or damage to gear sides; 2. Transmission slippage: If the hydraulic oil level is too high, it generates a large amount of foam when violently agitated by the planetary gear set during operation, causing wear or burning of clutch and brake friction plates and bands; 3. Transmission oil leakage: Oil leakage in the transmission results in insufficient internal lubrication, accelerates friction between gears, and prevents the transmission from functioning properly.
After driving for a long time, I've noticed that transmission failures often have typical symptoms. The most common issue is rough shifting—manual transmissions may be hard to engage, while automatics exhibit delayed responses, taking seconds to react. Slipping is another concern: engine RPMs surge, but the car doesn’t accelerate, as if it’s in neutral. Strange noises also appear, like metal grinding or humming, especially during reversing or at low speeds. Abnormal vibrations make the car shudder, particularly near shift points. A dashboard warning light signals a system error—don’t ignore it. Leaking fluid under the car, visible as reddish-brown stains, indicates seal failure. Jerking causes sudden lurches during acceleration. These problems stem from dirty fluid or worn components—early repairs prevent breakdowns. Regular transmission fluid changes save money—inspect every 30,000–40,000 km.
