Abnormal Noise When Shifting Gears in Automatic Transmission?
4 Answers
Automatic transmission produces abnormal noise during gear shifting for the following reasons: 1. The release bearing lacks lubricant, resulting in dry grinding or bearing damage. 2. There is no gap between the inner end of the release bearing and the release lever. 3. The bushing and guide tube of the release bearing are contaminated with oil and dirt, or the return springs of the release bearing and pedal are fatigued, broken, or detached, leading to poor return of the release bearing. Solution for abnormal noise during gear shifting in automatic transmission: The issue of abnormal noise during gear shifting in automatic transmission is relatively complex, and it is recommended to visit a repair shop for a comprehensive inspection.
Throughout my career as a mechanic, I've encountered numerous cases of abnormal noises when shifting automatic transmissions. Common causes include insufficient or deteriorated transmission fluid—when the fluid turns black or contains impurities, it leads to inadequate lubrication, resulting in clunking sounds during gear shifts. Another issue is internal wear, such as loose gears or shift mechanisms, especially in older vehicles where prolonged use accelerates component wear. If accompanied by vibrations, the problem becomes even more severe. It's also crucial to check whether the oil pump is functioning properly. If the fluid level is low, top it up promptly, as regular maintenance can significantly extend the transmission's lifespan. Never ignore such minor noises—visit a repair shop for a comprehensive inspection as soon as possible. Simple fixes like fluid changes or adjustments can prevent major damage. Delaying repairs might eventually require replacing the entire transmission, which is both costly and hazardous. At home, you can check the fluid level and color using the dipstick, but if unsure, always rely on professionals—safety comes first.
A while ago, my car made a buzzing noise when in automatic gear. At first, I thought it was a minor issue, but it gradually got louder and was accompanied by jerking sensations. After checking the manual, I realized it was due to aged and deteriorated transmission fluid, causing unstable oil pressure and rough gear shifts. I immediately drove to the 4S shop, where the mechanic confirmed the fluid needed replacement. After changing to new fluid, the noise disappeared. They also inspected the oil lines and gears, finding no major issues. I recommend fellow car owners change their transmission fluid regularly—typically every two to three years or every few tens of thousands of kilometers—and not wait until problems arise like I did. Gear-shifting noises can be early warning signs; addressing them promptly saves hassle and money. Especially before long trips, always check to ensure safe driving.
I noticed abnormal noises when shifting gears while driving. After a simple check, the oil level seems fine, but it might be due to loose screws or minor wear. New drivers, don't panic—check the dipstick to see if the oil color is clear. If it's black, go for repairs. Ensuring driving safety is the top priority. If you're not sure what to do, don't force it—just drive to a professional shop and let the technician diagnose it. Abnormal gear-shifting noises are often caused by oil issues or minor faults. Timely repairs can prevent further damage.
