What Are the Causes of Friction Noise in the Transmission?

1 Answers
HarrisonLynn
07/30/25 4:45am
Transmission friction noise can be attributed to the following reasons: 1. Wear noise: If the noise originates from the transmission during driving, it might be due to worn transmission bearings or gears, or bearing spots. 2. Speed change-related noise: If there is abnormal noise from the transmission during acceleration and gear shifting, it could indicate the presence of metal particles in the transmission fluid, suggesting excessive wear of components like brake bands and clutches inside the transmission. Here are specific solutions: 1. Check if the noise is speed-related: During analysis and judgment, pay attention to whether the noise is related to specific speeds, such as some planetary gears being more noticeably noisy around 50Km/h. Also, determine if it is related to certain gears, which is crucial for diagnosing transmission issues. If noise occurs in a specific gear, it is definitely related to the components affecting that gear's transmission. 2. Avoid gear grinding during shifting: Gear grinding refers to the noise that easily occurs during gear shifting. If this noise persists for a long time during gear changes, it can damage the ratchet teeth on the synchronizer ring.
Was this review help?
12
4
Share
More Forum Discussions

What Items Are Included in a Full Vehicle Maintenance?

Common maintenance items include: engine oil, oil filter, fuel filter, air filter, and cabin air filter. Automobile manufacturers provide a "Vehicle Regular Maintenance Schedule" with each vehicle upon delivery. The maintenance items and intervals are usually determined based on mileage, aiming to achieve optimal performance and extend the vehicle's lifespan through regular maintenance. Different manufacturers and models may have varying maintenance items and schedules. Therefore, it is essential to follow the accompanying maintenance schedule for your vehicle's upkeep. Additional Information: 1. Air Filter: The engine inhales a large amount of air during operation. If the air is not filtered, dust can accelerate the wear of the piston group and cylinder. Larger particles entering between the piston and cylinder can cause severe "cylinder scoring." The air filter's role is to remove dust and particles from the air, ensuring sufficient and clean air enters the cylinder. 2. Fuel Filter: The fuel filter provides clean fuel to the engine by filtering out water and impurities from the gasoline. This optimizes engine performance and offers the best protection for the engine. 3. Typically, during vehicle maintenance, technicians will perform additional inspections based on the vehicle's specific condition and may include other maintenance items, such as inspection and cleaning of engine-related systems, tire alignment checks, inspection of various fastening components, etc.
20
3
Share

What are the precautions for novice drivers?

Precautions for novice drivers are as follows: Adjust driving posture: The driving posture mainly relates to the steering wheel and seat. First, sit deeply in the seat with your back and shoulders against the backrest. Ensure the seat's front-back distance and backrest angle are appropriate, grip both sides of the steering wheel, and use your feet to operate the clutch pedal, brake pedal, or accelerator. Clutch and throttle coordination: Adjust the correct clutch and throttle coordination based on the vehicle speed. Place the gear in neutral, press the clutch pedal to the floor, shift the gear lever to first gear, slowly release the clutch, and use the throttle to start the car. Slow reversing: Observe the rearview mirror, turn your head to look through the rear windshield, and check the situation behind and on both sides of the car. Based on the observed conditions, the car's outline, and the width and height of the load, keep the reversing speed below 5 km/h. Traffic signs: Novice drivers should pay attention to the signs set up on the roadside and the road, and understand the meaning of traffic signs before driving. Meeting vehicles: Based on the type, speed, and load of the oncoming vehicle, the width and firmness of the road ahead, the situation of pedestrians and vehicles on the roadside, and parked cars or obstacles, observe and compare to determine the approximate position and road occupancy when the two vehicles meet. Leave an appropriate lateral safety gap, reduce speed, and stop if necessary. On roads without streetlights or poor nighttime lighting, turn off the high beams and use low beams.
12
1
Share

How to close the windows after turning off the Cadillac XTS?

After turning off the Cadillac XTS, you can close the windows. The vehicle's remote key has a lock/unlock button. Press and hold the lock button to close all windows, and press and hold the unlock button to open all windows. The Cadillac XTS windows are equipped with a one-touch up/down feature, which needs to be enabled in the vehicle's personalized settings. Once activated, you can press and hold the switch on the remote key to operate the windows with one touch. Below are the features of the Cadillac windows: 1. The Cadillac windows come with an "anti-pinch" function. The "anti-pinch" function means that during the window's upward movement, if the control system detects any resistance, it will stop the window from rising and lower it instead, preventing the risk of pinching fingers. Some owners have reported that even when fingers are caught, the force felt is relatively strong, but there is no intense squeezing sensation, possibly due to the slow rising speed of the window. 2. Mid-to-high-end models are equipped with one-touch up/down windows, primarily for the convenience of drivers and passengers, to avoid distractions while operating the windows and enhance safety. One-touch up/down windows generally include the "anti-pinch" function to prevent the risk of pinching fingers.
17
5
Share

What to Do If the Interior Reading Light Stays On?

If the interior reading light stays on, it is likely due to a switch or internal issue, and it is necessary to have it inspected and repaired at a 4S shop. Below is extended information about interior reading lights: 1. An interior reading light is a lamp installed inside the car to facilitate reading. 2. Halogen interior reading lights use halogen materials. These lights, made from halogen, are technologically mature and low-cost, and are used in many car models. However, they also have some drawbacks, such as radiation, mercury content, and being prone to breakage, which can cause inconvenience during transportation and installation. 3. LED interior reading lights use LED materials. These lights, made from LEDs, are pollution-free, radiation-free, and have a long service life, with a theoretical lifespan of over 50,000 hours.
20
5
Share

How to Identify a Flood-Damaged Car?

Here are several most effective methods to identify a flood-damaged car: 1. Smell for musty odors inside the car. Flood-damaged cars often have a musty smell in hidden areas such as the floor mats, trunk mats, and under the seats. This is because the interior of a flood-damaged car tends to retain moisture, and even after drying, some musty odors may remain. 2. Check for rust or signs of disassembly on the screws in the vehicle. Adjust the seats backward to inspect the seat tracks for rust or mud/water stains. Also, pull the seatbelt all the way out to check for water stains or dirt at the end, and see if it retracts smoothly. 3. Test the functionality of the buttons inside the car. Press the buttons or turn the knobs. If most buttons and knobs feel sticky or have resistance when pressed, it could be due to sand and mud stuck in the gaps from flooding, indicating a possible flood-damaged car. 4. Inspect the cigarette lighter for rust or metal shavings, and check various plugs for mud or sand. Additionally, look for water accumulation or fogging in the vehicle's headlights. 5. Finally, you can visit a 4S shop to check the maintenance records for any engine repair history. If there are records of major repairs, it could indicate that the car has been in a serious accident or flood, making this one of the simplest ways to identify a flood-damaged car.
8
5
Share

What is the fuel consumption of the Crown Land Cruiser?

The actual fuel consumption of the Crown Land Cruiser is 6.0-7.0L/100km. The currently available Crown Land Cruiser models include six variants: the 2021 2.5L HEV 4WD Premium Edition, HEV 4WD Luxury Edition, HEV 2WD Basic Edition, HEV 4WD Flagship Edition, HEV 2WD Elite Edition, and HEV 4WD Elite Edition. The official NEDC combined fuel consumption ranges from 5.3-5.8L/100km. Among vehicles in the same class, the Highlander has an NEDC combined fuel consumption of 3.1-4.0L/100km, the BMW X1 ranges from 6.1-9.2L/100km, the Audi Q3 is between 6.7-7.5L/100km, and the Cadillac XT4 has an NEDC combined fuel consumption of 7.2-7.6L/100km. Vehicle fuel consumption is directly influenced by five major factors: driving habits, the vehicle itself, road conditions, natural wind, and ambient temperature. Details are as follows: Driving habits: Aggressive driving behaviors such as sudden acceleration, frequent overtaking, and not easing off the throttle before a red light can increase fuel consumption. The vehicle itself: Cars with larger engine displacements generally consume more fuel than those with smaller displacements because larger displacements typically produce more power, requiring more gasoline for combustion. Heavier vehicles also have higher fuel consumption due to the greater driving torque needed. Road conditions: Driving on unpaved roads, muddy roads, soft surfaces, or mountainous terrain increases resistance and fuel consumption. Natural wind: Driving against the wind or on windy days increases vehicle resistance and fuel consumption. Low ambient temperatures: When the engine block is cold, gasoline injected during a cold start does not atomize easily, requiring more fuel for combustion, which increases consumption. Additionally, lower temperatures prompt the engine's computer to use higher RPMs to warm up the vehicle, further increasing fuel consumption.
7
4
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.