How to Identify Transmission Abnormal Noises?
3 Answers
Symptoms of transmission abnormal noises: 1. Additionally, pay attention to whether there is a backfire sound from the carburetor and whether the engine has severe knocking sounds. 2. If there is a "rustling" sound inside the transmission while driving, which disappears when the clutch or accelerator is pressed, and there is a sound similar to whistling during gear shifting. Below is relevant information about transmission abnormal noises: Methods to solve transmission abnormal noises: 1. The transmission has many components, and the causes of noises are relatively complex. When analyzing and judging, pay attention to: whether it is related to specific speeds, such as some planetary gears making obvious noises around 50Km/h. 2. Whether it is related to certain gears, which is very important for judging transmission faults. If a certain gear makes noise, it is definitely related to the components affecting the transmission of that gear; if all gears make noise, it is often a fault with the constant mesh gear shaft or insufficient oil in the transmission. 3. Whether it is related to specific actions, such as shifting up or down, starting, rapid acceleration, rapid deceleration, turning, etc., which are effective means to judge abnormal noises. Among them, changing speed and direction are particularly important for determining rear axle faults. If the transmission noise is obvious, it is recommended to send it to a professional repair shop to identify the faulty component and then replace it.
I often enjoy figuring out car issues on my own, and I've encountered transmission noises several times. Mainly when accelerating or decelerating, abnormal noises like humming, rattling, or clicking come from the bottom of the car. It's especially noticeable during gear shifts—manual transmissions make louder noises when releasing the clutch pedal, while automatics may produce abnormal jerking sounds during gear changes. You can test this on a quiet street or parking lot: turn off the music and AC, drive at low speed, and try different gears to see if the noise persists. If the sound only appears under specific conditions, like when climbing a hill or shifting from high to low speed, it's likely a transmission issue. Ignoring it could damage the gears or even lead to a breakdown. Last time I delayed repairs, the entire transmission ended up ruined. First, check the transmission fluid level and color—dirty or low fluid often causes noise. But if the noise is confirmed, it's best to get a professional diagnosis immediately. Remember, drive safely and don’t delay repairs.
As an ordinary office worker, I pay attention to my car's condition during my daily commute. Identifying transmission abnormal noises is quite simple: while driving, listen carefully for unusual sounds coming from the chassis during acceleration or gear shifts, such as metal grinding or hissing noises. The location is slightly further back than the engine, distinguishing it from tire noise. I often hear these sounds in traffic jams. If the noises become frequent, I'll find an empty parking lot on the weekend to test: start the car, shift into neutral and different gears, and slowly press the accelerator to listen for changes. If abnormal noises are confirmed, I first check the transmission dipstick to ensure the oil level is normal and free of foam. But don't attempt repairs yourself—neglecting it could lead to transmission overheating or failure. I had a friend whose noisy car broke down midway. Going directly to a repair shop is the wise choice to avoid major repair costs. Regular maintenance helps minimize issues.
