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What causes the brakes to feel soft and then hard intermittently?

1 Answers

FranciscoLee

07/30/25 5:16am

Brakes feeling soft and then hard intermittently is because the vacuum booster pump is not yet operational. Below is an introduction to the automotive booster pump: Introduction: An automotive booster pump refers to a component that enhances and stabilizes vehicle performance. It mainly assists the driver in adjusting the car's direction. All vehicles are equipped with booster pumps, primarily including the steering booster pump and the brake vacuum booster pump. Classification: In the current market, power steering systems can be roughly divided into three categories: mechanical hydraulic power steering systems, electro-hydraulic power steering systems, and electric power steering systems. The steering booster primarily assists the driver in adjusting the vehicle's direction, reducing the effort required to turn the steering wheel. Of course, power steering also plays a role in the safety and fuel efficiency of the vehicle during operation.

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What should be noted when following the car ahead to make a right turn?

When following the car ahead to make a right turn, pay attention to: 1. The car ahead: The car ahead may stop to yield to pedestrians or non-motorized vehicles at the intersection. 2. Crosswalk: Pedestrians may suddenly enter the crosswalk. 3. Blind spots: The right side is the non-motorized vehicle lane, and there may be non-motorized vehicles going straight in the blind spot. More relevant information is as follows: 1. Turn on the turn signal: Before changing lanes for a right turn, turn on the turn signal in advance. This mainly serves as a reminder for vehicles behind, as well as electric vehicles, bicycles, and pedestrians. 2. Watch for vehicles going straight on the left: Before making a right turn, check for vehicles going straight on the left. If you look up related accident cases, you will find that most car owners ignore the vehicles going straight when making a right turn, leading to scratches.

Why does the Haval M6 Plus shake when idling with the air conditioning on?

Haval M6 Plus shaking when idling with the air conditioning on may be caused by ignition system failure, engine aging, excessive carbon buildup, or other reasons. If the spark plugs in the ignition system have been used for a long time, they may not fire properly, leading to unstable idling. Therefore, it is necessary to promptly inspect the ignition system components such as the spark plugs. If excessive carbon buildup on the spark plugs causes the vehicle to shake at idle, the spark plugs should be replaced or cleaned in time to prevent such issues from recurring. Generally, idle shaking issues in vehicles are related to the engine. If the engine is not cleaned for a long time or shows signs of aging, it can affect its normal operation. In such cases, it is recommended to replace the engine promptly or thoroughly clean the carbon deposits inside the engine to ensure the vehicle runs smoothly.

What does VDC mean in Nissan vehicles?

VDC stands for Vehicle Dynamic Control, known in Chinese as the vehicle dynamic control system. Below is an extended introduction to its functions: Function: When a vehicle experiences wheel slip, roll, or loss of tire traction, the VDC system immediately intervenes. It reduces engine speed while purposefully applying braking control to individual wheels, ultimately guiding the vehicle back onto the correct path to prevent dangers caused by loss of control. In situations such as understeer, oversteer, or on slippery roads where various conditions may occur, it automatically adjusts braking force and torque to help the driver maintain the intended direction. When the vehicle enters a curve and understeer persists, the body's rigidity still maintains a certain level of stability in the curve, and the issue is resolved quickly through system adjustments.

What Causes High Temperature in a Car Radiator?

The causes of high temperature in a car radiator are as follows: 1. Insufficient coolant: It should be promptly added to the appropriate level. Note that you should not immediately open the radiator cap or reservoir cap after parking, as the internal pressure is too high and opening it may cause instant spraying. Wait until the temperature cools down slightly before slowly opening the reservoir cap. 2. Faulty cooling fan: When the car is running at high speed, the generated heat cannot be promptly transferred to the coolant, affecting heat dissipation and causing the coolant temperature to rise, leading to issues like overheating. 3. Dirty radiator: The radiator has many pores formed by cooling fins, which can easily get clogged with lint, sludge, and other debris, reducing airflow and worsening heat dissipation. This can easily cause high water temperature in summer, and washing the radiator promptly can resolve the issue.

What is the ES car?

ES is a front-wheel-drive luxury mid-size sedan. Front-wheel drive, also known as FWD, refers to a car design where the engine only drives the front pair of wheels, which is the configuration used by most sedans. Mid-size sedans typically have a wheelbase ranging from 2.8 to 3.0 meters, a body length between 4.8 and 5.0 meters, and an engine displacement generally from 2.0 to 3.0 liters. Taking the Lexus ES as an example, its body dimensions are 4975 mm in length, 1866 mm in width, and 1447 mm in height, with a wheelbase of 2870 mm. The Lexus ES features a front-engine, front-wheel-drive layout, with a front suspension type of MacPherson strut with a stabilizer bar and a rear suspension type of multi-link independent suspension. The body structure is unibody.

Which Turn Signal Should Be Used When Parking?

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