Is It Necessary to Repair Transmission Abnormal Noise?
3 Answers
Yes. The causes of abnormal noise in the transmission may include bearing wear or damage, insufficient or overly viscous lubricant causing uneven lubrication, and long-term failure to replace automatic transmission fluid. Below are detailed reasons for transmission abnormal noise: 1. Bearing wear or damage: When bearings wear out, the gap increases, leading to reduced precision in component fit. Damaged bearings cannot operate normally, resulting in abnormal noise and potentially causing damage to other transmission parts, escalating the fault. 2. Insufficient lubricant or overly viscous lubricant causing uneven lubrication: In such cases, the corresponding lubricant (grease) must be replaced; otherwise, it will accelerate transmission wear and shorten its service life. 3. Long-term failure to replace automatic transmission fluid: Not replacing the automatic transmission fluid for a long time causes it to thicken and lose effectiveness, reducing the protective layer between components and increasing friction, thereby accelerating wear on mechanical parts. In severe cases, it can damage components like the automatic transmission planetary gear set and differential. Damage to internal parts also leads to abnormal noise in the automatic transmission.
Transmission noise is definitely not something to ignore. After all, the transmission is like the heart of the car, and any unusual sound could indicate deeper issues. For example, my car had this problem before, and after inspection, it turned out to be a worn bearing. If left unchecked, it could have nearly ruined the entire transmission. If not repaired, it might suddenly fail on the highway—how dangerous is that? Safety is no joke. I recommend you go to a professional shop for a diagnosis right away to check if it’s due to lack of lubrication or part damage. Early detection and repair can save you from bigger troubles with just a small cost. Regular maintenance can also extend the transmission’s lifespan and make driving safer. In short, don’t cut corners to save effort—safety comes first, especially when you’re carrying your family.
When hearing unusual noises from the transmission, I would first evaluate the cost issue, because repairing this thing isn't cheap. A simple check might only cost a few dozen bucks, but if ignored and left to develop into major problems like gear grinding or oil leaks, you could end up spending thousands on a new one. I made this mistake once—thinking it was minor and not worth addressing, only to be shocked by the hefty repair bill later. I suggest you listen to the noise frequency: intermittent sounds might indicate poor lubrication, while consistent loud noises are more dangerous. Take it to a repair shop to scan for trouble codes and determine if it's worth fixing. If the noise is slight and the car isn't driven much, you might postpone repairs, but in most cases, I'd recommend fixing it. Regularly check the transmission fluid and maintain proper levels to prevent such issues. This approach saves both money and hassle, avoiding endless future troubles.
