You may have noticed that your car or truck makes some peculiar sounds while driving, especially when the automatic transmission shifts gears. Transmission noise can be alarming, but don’t worry — the source of most transmission noise can be identified and fixed. Here are the four most common transmission noises and what may be causing them.
Grinding Noise When Shifting Gears
If your car makes a grinding noise when it shifts gears, it could signal transmission trouble. The grinding noise is caused by the gears not meshing correctly, damaging the gear teeth. If left unchecked, this can lead to severe transmission damage. In addition, several other issues can cause a grinding noise, such as low transmission fluid, an issue with the planetary gear system, or a faulty torque converter. If you hear a grinding noise, have your car checked by a mechanic as soon as possible.
Clunking
One of the most common transmission trouble noises is a clunking sound. This can be caused by various things, including low transmission fluid, worn gears, or a damaged torque converter. If you hear this noise, get your car’s transmission checked as soon as possible to avoid further damage.
Whining Noise While Driving
Another common transmission trouble sign is a whining noise while driving. If you notice your car making this noise, it’s essential to get it checked out by a professional right away. Whining noises can indicate various transmission problems, from low fluid levels to more severe issues. In some cases, contaminated transmission fluid, or fluid that has become overused, can cause a whining sound.
Gurgling Sound
One potential cause of a gurgling sound is low transmission fluid levels. When your transmission doesn’t have enough fluid, it can’t properly lubricate the moving parts, leading to increased noise. Another possible cause is a problem with the torque converter. The torque converter transfers the rotational power that the engine produces to the transmission; if it’s not working correctly, it can make a gurgling sound. Finally, air can become trapped in the transmission lines, leading to this sound.
While your car’s transmission will usually give you several years of worry-free use, it can break down over time. Regular maintenance and understanding the signs of problems will help you avoid severe transmission damage and costly repairs in most cases. If you notice any of these transmission noises, see your mechanic as soon as possible to get it diagnosed and fixed.