What is the tire model of the Mercedes-Benz S450?

What Causes a Car to Shake When Starting but Run Smoothly Afterwards?

If your car shakes at idle but runs smoothly when driving, it is recommended to check whether the throttle body, fuel injectors, and idle air control valve need cleaning. This is because when accelerating with the throttle, the issue of insufficient fuel supply at idle is masked. Common causes and solutions for vehicle idle shaking: 1. Spark plug issues: If the spark plugs in the car's ignition system malfunction, it can lead to poor ignition system performance, weak spark plug firing, and other problems, resulting in unstable idle conditions. Solution: Inspect the condition of the spark plugs, high-voltage wires, and ignition coils. Check for excessive carbon buildup on the spark plugs and clean or replace them immediately if found. 2. Fuel quality issues: Poor fuel quality can damage engine performance, leading to idle shaking. Solution: Clean the throttle body promptly, which can usually resolve common issues. If the problem persists, professional repair is necessary. 3. Excessive carbon buildup or engine aging: Excessive carbon deposits inside the engine can absorb a large amount of fuel sprayed by the injectors during cold starts, resulting in a lean air-fuel mixture and difficulty starting. Once the carbon deposits become saturated with fuel, the engine starts more easily. However, the fuel adsorbed on the carbon deposits is then drawn into the cylinders by the engine's vacuum, enriching the mixture and causing idle shaking after a cold start. Solution: Clean the fuel system and check the idle control valve for carbon buildup, cleaning it if necessary.

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What is the safe following distance in urban areas?

In urban areas, the safe following distance should not be less than 50 meters. Below is an introduction regarding following distance: 1. Introduction: According to the "Road Traffic Safety Law of the People's Republic of China," when a motor vehicle is driving on a highway at a speed exceeding 100 kilometers per hour, the safe following distance should be more than 100 meters; when the speed is below 100 kilometers per hour, the minimum safe following distance should not be less than 60 meters. 2. Considerations: This determination method already takes into account the driving speeds of both the front and rear vehicles, making it simple and practical. The faster the speed, the longer the distance covered in three seconds. If the road ahead has good visibility and the driving conditions of several vehicles in front can be seen, the three-second following distance can be flexibly adjusted and appropriately shortened. 3. Electronic monitoring: On May 1, 2018, Tianjin implemented the first batch of electronic monitoring systems nationwide to capture violations of "failing to maintain a safe following distance."

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What is the reason why the sunshade curtain of BYD Song's sunroof cannot be closed?

The reasons why the sunshade curtain of BYD Song's sunroof cannot be closed are incorrect initialization position, sunshade curtain motor failure, circuit failure, and communication signal failure. The following is an introduction to car sunroofs: 1. Car sunroofs are installed on the roof, which can effectively circulate the air inside the car and increase the intake of fresh air. At the same time, car sunroofs can also broaden the field of vision and meet the shooting needs of mobile photography and videography. Car sunroofs can be roughly divided into: sliding-out type, built-in type, built-in flip-out type, panoramic type, and curtain type. They are mainly installed on commercial SUVs, sedans, and other models. 2. Built-in sunroof refers to a sunroof where the sliding assembly is placed between the interior and the roof. Its advantage is that the sunroof opening is large, and the appearance is simple and beautiful. Most sedans use built-in sunroofs. 3. The flip-out sunroof has the advantages of small size and simple structure. In addition, car sunroofs are installed on the roof, which can effectively circulate the air inside the car and increase the intake of fresh air, bringing healthy and comfortable enjoyment to the car owner.

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How to Set Cruise Control on the Malibu?

To set the cruise control on the Malibu, follow these steps: The steering wheel has three rows of buttons. The rightmost button activates cruise control, while the leftmost button deactivates it. Below is a detailed introduction to cruise control: 1. First, turn on cruise control by pressing the rightmost button. A white indicator light will illuminate on the dashboard. Then, accelerate the vehicle to over 40 km/h and push the middle button downward to activate cruise control. Once activated, releasing the accelerator will maintain the set speed. You can adjust the cruising speed by pushing the button upward or downward—each upward push increases the speed by 1 km/h, while each downward push decreases it by 1 km/h. Pressing the left button or applying the brakes will cancel cruise control. 2. To resume the previous cruising speed, push the button upward. To set a new cruising speed, push it downward. Note that if your previous cruising speed was 120 km/h but your current speed has dropped to 60 km/h, pushing upward will cause the vehicle to rapidly accelerate, resulting in a brief sensation of being pushed back into the seat, accompanied by high engine RPM. 3. While cruise control is highly convenient for long highway drives, it’s important to note that highway driving can easily induce drowsiness. Cruise control reduces the need for active vehicle control, which may lead to driver distraction and compromise safety. Additionally, cruise control is affected by weather and road conditions. Its use is prohibited during rain, snow, or on complex terrain.

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Why Does a Dual-Fuel Vehicle Automatically Switch from Gas to Gasoline?

Dual-fuel vehicles may automatically switch to gasoline due to low gas pressure, as the power output when running on gas is generally lower than when running on gasoline. Below is relevant information about bi-fuel vehicles: 1. Fuel Supply System: A bi-fuel vehicle is equipped with two independent fuel supply systems. One supplies natural gas or liquefied petroleum gas (LPG), while the other supplies gasoline or diesel. These two fuel supply systems can individually, but not simultaneously, deliver fuel to the engine cylinders. The driver can switch between gas and fuel modes using a dedicated fuel switch button. 2. Electronic Control Logic: The bi-fuel control system processes signals from gas-related sensors (such as the pressure regulator temperature sensor and high-pressure sensor) and controls actuators (like the gas injector and pressure regulator) directly through a single ECU.

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What is the formal name of the handbrake?

The formal name of the handbrake is the auxiliary brake. Here is an introduction to the handbrake: 1. Introduction: The handbrake is used to stabilize the vehicle after it has stopped, preventing accidents caused by rolling on inclined surfaces. 2. Location: Common handbrakes are usually placed within easy reach of the driver's right hand for convenience, though some models may position the parking brake on the side of the brake pedal. 3. Principle: The parking brake only acts on the rear wheels, utilizing two metal cables to pull the rear brake pads to achieve braking. Normally, when the handle is pulled to about 70% of its full travel, the handbrake should be in the proper braking position. Before testing the handbrake's braking force, it's necessary to locate this point, which can be determined by counting the clicks of the ratchet. The 70% position is the effective working point of the handle.

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What is the tire model of the Mercedes-Benz S450?

What Causes a Car to Shake When Starting but Run Smoothly Afterwards?

What is the safe following distance in urban areas?

What is the reason why the sunshade curtain of BYD Song's sunroof cannot be closed?

How to Set Cruise Control on the Malibu?

Why Does a Dual-Fuel Vehicle Automatically Switch from Gas to Gasoline?

What is the formal name of the handbrake?

Is releasing the clutch done by lifting the foot or pulling it back?

Is an Appointment Required for a Test Drive?

How Long Does a Test Drive Usually Last?

Does the Peugeot 508 have an independent suspension?