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What Causes High-Speed Brake Shaking?

2 Answers

Hope

09/03/25 5:37am

High-speed brake shaking: 1. Body shaking: Check the vacuum tube connected to the engine to confirm whether it was accidentally dislodged during an oil change or other maintenance, causing mixture leakage, loss of engine throttle, resulting in excessively low idle speed and thus shaking. 2. Steering wheel shaking: If the lateral runout of the brake disc exceeds 0.05 mm, the brake pedal may exhibit slight pulsation. Brake discs that have worn beyond the minimum thickness limit must be replaced. The brake is a mechanical device that slows down the vehicle, also known as a decelerator. The car's brake pedal is located below the steering wheel. Pressing the brake pedal activates the brake linkage, which applies pressure to the brake pads on the brake drum, clamping the brake rotor to slow or stop the vehicle.

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MadelineDella

09/15/25 7:08am

Once while driving on the highway at over 100 km/h, I experienced severe steering wheel vibration when braking. Upon inspection, it turned out to be warped brake discs. High-speed braking vibrations are usually caused by uneven heat distribution leading to brake disc warping; or unbalanced wheels amplifying the vibration; loose suspension systems can also cause similar issues. Don't underestimate this problem - at high speeds it distracts attention and increases accident risks. I recommend slowing down immediately, pulling over safely, and proceeding slowly to a professional shop for inspection. Now I regularly check my brake discs and perform wheel balancing as preventive maintenance every 10,000 km to ensure safe and comfortable driving.

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What are the reasons for the car not accelerating when the throttle is applied?

The reasons for the car not accelerating when the throttle is applied are as follows: 1. Clutch issues: If the clutch plate is excessively worn, the friction between the engine flywheel and the clutch plate decreases, causing slippage during operation. When accelerating, the engine's power cannot be fully transmitted through the clutch to the gearbox and wheels, as some of the power is consumed by slippage, resulting in an insignificant increase in speed when the throttle is applied. Another scenario is improper clutch travel adjustment leading to poor acceleration, such as when the clutch has insufficient or no free play, causing it to remain in a semi-engaged state, which also prevents the car from accelerating effectively. 2. Excessive carbon buildup: If there is too much carbon buildup on the engine's fuel injectors, spark plugs, or throttle valve, it affects the air-fuel mixture in the engine cylinders, making it too lean or too rich. When the combustible mixture does not burn completely, the engine's power output decreases, making it difficult to accelerate. Carbon buildup on the fuel injectors can lead to poor fuel atomization or even cause fuel to drip instead of atomizing. Issues like spark plugs not firing or firing weakly can also occur. All these factors can affect the car's ability to accelerate when the throttle is applied.

Where is the Transmission Fluid Filler Port Located?

Transmission fluid filler port is located on the transmission oil pan. For new vehicles under normal driving conditions using synthetic oil, the oil can typically be changed every 10,000 kilometers, and in some cases, it can even be extended up to 20,000 kilometers. Below is the relevant information: 1. Transmission Fluid: Transmission fluid is a lubricant that keeps the gear system clean, lubricates to prolong the life of the transmission components, and provides effective lubrication even under low-temperature conditions, reducing oil loss under harsh operating conditions. Depending on the transmission structure, transmission fluid is categorized into automatic transmission fluid and manual transmission fluid. 2. Oil Change: Under 'severe driving' conditions, engine wear is more significant, and the requirements for oil are higher. Therefore, it is recommended to shorten the oil change interval to effectively protect the engine. It is usually difficult to determine whether the oil needs to be changed by visual inspection or touch. However, after prolonged use, the oil accumulates a large amount of impurities. If the oil is not changed in time, these impurities will eventually wear down the engine and shorten the vehicle's lifespan.

What are the regulations for using temporary vehicle license plates?

Temporary license plate usage regulations are as follows: 1. Validity period: Temporary license plates have a limited validity period, not exceeding 30 days at most. For new vehicles, it should not exceed 15 days. Therefore, it is necessary to apply for formal license plates from the vehicle management authority within the validity period. After expiration, driving on the road will result in penalties such as vehicle impoundment, a fine of 200 yuan, and 12 points deduction. 2. Regional restrictions: In addition to time limits, temporary license plates also have regional restrictions. If it is a local temporary license plate, it can only be used within the local area. Using a local license plate across regions will also be punished. If you frequently travel long distances or cross regions, it is recommended to use a cross-regional temporary license plate. 3. Placement requirements: Temporary license plates usually come in two pieces, with functions similar to formal license plates. However, the placement positions are different. One temporary license plate should be placed in the lower left or right corner of the front windshield, and the other must be placed in the lower left corner of the rear windshield. They should not be placed randomly.

What does AT tire mean?

AT tires stand for All-Terrain tires. AT is the abbreviation of ALL-TERRAIN, which translates to all-terrain, indicating tires that balance both off-road and on-road performance. All-terrain tires feature a more rugged tread design, with slightly larger gaps between the tread blocks compared to highway tires, resulting in drawbacks such as reduced on-road performance and increased noise. However, AT tires surpass regular tires in durability and traction on unpaved surfaces, making them a balanced choice for both off-road and highway driving. Here is some additional information: 1. Off-road tires: Tires suitable for driving in the wild, typically including highway tires, all-terrain tires, mud tires, etc. 2. Highway tires: Highway tires are referred to as HT. Generally, off-road vehicles come equipped with neutral road pattern tires when leaving the factory, mainly designed for highway driving, characterized by softer sidewalls and finer tread patterns.

How to Determine the Remaining Charge of a Car Battery?

Use a voltmeter with a load to test the remaining charge of the battery. Here is relevant information: 1. Testing accuracy: Checking the battery's remaining charge solely with a voltmeter or the voltage setting of a multimeter without applying a load is difficult to achieve precise results. 2. Related load: When measuring voltage alone, the current consumption is minimal, so there is no significant voltage drop inside the battery, and the displayed voltage does not appear low. However, when applying a substantial load, such as turning on the headlights (load current 10–15A) or honking the horn (load current 6–12A), the battery will cause dim lights or a hoarse horn sound, indicating insufficient charge.

How to Determine if a Car is a Stock Vehicle

Methods to determine whether a car is a stock vehicle are as follows: 1. Check the odometer: Generally, a car with mileage not exceeding 50 kilometers is considered normal. A new car will inevitably accumulate some mileage during factory movement and relocation. If the mileage exceeds 100 kilometers, it indicates that the car might have been used for external exhibitions or test drive events. 2. Inspect rubber materials such as tires and sealing strips: The tires of a normal new car should have no damage on the sidewalls, and it's best if the tread hairs on both front and rear tires are intact. 3. Look at the manufacturer's plate: Every new car has a production date. When purchasing a car, pay attention to the production date. If it exceeds 3 months, the car is considered a stock vehicle.

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