What is the failure rate for Subject 3?

What is a MAF Sensor?

MAF sensor is an air flow sensor, also known as an air flow meter, and it is one of the important sensors in a car's electronic fuel injection engine. The amount of air inhaled by the engine during operation determines the fuel injection amount of the engine. The air intake serves as a crucial basis for fuel injection. If the air flow sensor malfunctions, the onboard computer will not receive accurate signals, leading to abnormal fuel injection control and affecting the engine's normal operation. MAF working principle: After external air enters the throttle, it flows through the sensor. Once it enters the engine, it carries away a significant amount of heat. The greater the external air flow, the more heat is removed. To maintain the necessary temperature of the air flow sensor, additional current is required to heat the sensor, which then adjusts the air flow size through current regulation.

7

4

Share

Does 84 Disinfectant Affect Car Paint?

84 disinfectant does affect car paint as it is highly corrosive and not recommended for vehicle cleaning. 84 disinfectant has a certain corrosive effect on aluminum, copper, carbon steel, etc. If not sufficiently diluted, it can also corrode car paint. It is a chlorine-based disinfectant, and chlorine is a volatile gas, so the container holding the disinfectant must be tightly sealed; otherwise, the disinfection effect will be compromised. In traditional painting processes, car paint is divided into four layers, collectively providing protection and aesthetic appeal to the vehicle body. With advancements in technology, more complex processes can achieve up to seven or eight layers. Taking the traditional four-layer paint as an example, from the inside out, they are the electrophoretic layer, the intermediate coat, the color coat, and the clear coat.

2

3

Share

How Long Does It Take to Get a License Plate for a New Car?

Official license plates usually take around three to five working days to be issued. Before registering a new car, you need to prepare the vehicle qualification certificate, keep the triplicate car purchase invoice, pay the vehicle purchase tax to obtain the tax payment certificate, prepare copies and originals of your ID card, and go to the vehicle management office for registration and inspection. Then, you can select a license plate number. After about five working days, you can collect the license plate either by picking it up at the vehicle management office or having it delivered to your home via express mail. Costs for new car license plate registration: 1. Criminal investigation fee: 50 yuan 2. Documentation, photography, and rubbing fee: 110 yuan 3. Administrative fee: 143 yuan 4. Inspection fee: 125 yuan (can be waived) The total for the above four items is 428 yuan. For license plate delivery, the vehicle management office generally uses China Post Express Mail, which usually arrives within seven days after mailing. Some regions may not provide SMS or tracking number notifications. In such cases, you can open a browser on your computer and search for "China Post Logistics Tracking" using Baidu. After entering the tracking number, you can check the progress of your mailed item. Alternatively, you can search for the China Post App via the Baidu App and download it from the official China Post website. After downloading, open the app, register your information, and click on the search bar at the top of the page to enter the mail tracking page. Then, select "vehicle license plate" and enter the plate number to check the progress of plate production and delivery. Steps to register a new car at the vehicle management office: 1. Obtain the vehicle qualification certificate. This document is crucial for license plate registration. Some car dealerships may delay providing it, which can postpone your registration. Therefore, communicate firmly with the dealership to get the certificate as soon as possible. 2. Keep the triplicate car purchase invoice. The dealership will issue this invoice, which is necessary for registration. The invoice comes in red, yellow, and blue copies; usually, the red and yellow copies are submitted, while the yellow copy is kept for personal records. 3. Pay the vehicle purchase tax and obtain the tax payment certificate. After purchasing the car, promptly pay the tax at the nearest vehicle management office and keep the certificate safe. 4. Register and inspect the vehicle at the vehicle management office. Once all documents are ready, go to the office for registration. A traffic police officer will inspect the vehicle, checking the VIN, exterior, and warning triangle. Prepare these in advance. 5. Select a license plate number. After inspection, you can choose a number at the office, either by self-selection or random selection. Note that most desirable self-selected numbers may already be taken. How to check license plate production progress on 12123: Register and log in to the 12123 App, where you can view the progress under "Online Application Status." Once the plate is made and shipped, you can track the logistics. If you’ve bound your phone number, you’ll also receive an SMS notification. The vehicle management office typically takes 15-20 minutes to make a license plate, but processing times may vary depending on whether it’s peak or off-peak season.

8

0

Share

What are the causes of engine cylinder misfire?

Engine cylinder misfire can be caused by: 1. Spark plug clogging or damage; 2. Issues with cylinder wires; 3. Problems with the ignition coil; 4. Fuel injector clogging or low voltage, leading to loss of fuel injector data within the DME; 5. Issues with the air-fuel mixture; 5. Problems with cylinder pressure. Engine cylinder misfire can have severe consequences for the engine. After misfire, high concentrations of hydrocarbons enter the exhaust system, causing excessive tailpipe emissions. High hydrocarbon concentrations can also increase the temperature of the catalytic converter, potentially damaging it in severe cases.

10

3

Share

Can Car Automatic Headlights Be Left On for a Long Time?

Car automatic headlights can be left on for a long time, but owners should pay attention to the battery's power to avoid a power shortage. Automatic headlights, also known as automatic light-sensing headlights, are controlled by an ambient light sensor that turns the headlights on or off. The ambient light sensor controls the car's headlights based on the perception of external light. When the surrounding ambient light falls below a certain level, the headlights will turn on, and when the surrounding brightness exceeds a certain value, the headlights will automatically turn off. During daily driving, the car's headlights can be inspected, especially by controlling the ambient light sensor. Cover the ambient light sensor to see if the car's headlights respond. If the headlights do not respond, it may indicate a malfunction, and the owner should promptly check to ensure the headlights can function properly.

12

2

Share

What car is represented by a snake with a cross?

Snake with a cross represents Alfa Romeo, which is a famous Italian manufacturer of cars and sports cars. The Alfa Romeo Stelvio is a mid-size SUV with body dimensions of 4702mm in length, 1955mm in width, and 1697mm in height, with a wheelbase of 2818mm. In terms of power, the Alfa Romeo Stelvio uses two engines: one is a 2.0-liter turbocharged engine, and the other is a 2.9-liter V6 twin-turbocharged engine. The 2.0-liter turbocharged engine delivers 280 horsepower and a maximum torque of 400 Nm, while the 2.9-liter V6 twin-turbocharged engine produces 510 horsepower and a maximum torque of 600 Nm.

17

4

Share

What is the failure rate for Subject 3?

What is a MAF Sensor?

Does 84 Disinfectant Affect Car Paint?

How Long Does It Take to Get a License Plate for a New Car?

What are the causes of engine cylinder misfire?

Can Car Automatic Headlights Be Left On for a Long Time?

What car is represented by a snake with a cross?

What to Pay Attention to During Vehicle Inspection?

Is the Mercedes-Benz E300L imported?

What is the reason why the center control display screen of Hyundai Elantra does not light up?

How many kilometers can a new car drive before going on the highway?