Why Is the Car Air Conditioner Fan Not Working?

What are the pros and cons of an automotive intake booster pump?

Automotive intake booster pump can improve engine power, but it may affect exhaust emissions. Advantages of automotive intake booster pump: The main advantages of an intake booster pump are that it can increase engine air intake, enhance engine power, provide high output performance, low cost, and simple maintenance. Disadvantages of automotive intake booster pump: Automotive engines use a three-way catalytic converter as a post-processor, which requires the excess air ratio to be controlled around 1. At this point, CO, unburned HC, and NOx in the engine can completely react with each other. However, after installing a booster pump, the air intake increases while the fuel injection does not increase accordingly, which may affect the engine's post-processing efficiency and lead to non-compliant vehicle emissions.

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Are the First Inspection and First Maintenance of a Car the Same?

Car first inspection and first maintenance are not the same; the main difference lies in whether maintenance is performed. Below is a detailed introduction to the differences between the two: The items for first inspection and first maintenance are different: The first inspection only checks whether the condition of various car components is normal, while the first maintenance, in addition to checking components, mainly involves engine maintenance, including changing the engine oil and oil filter. The timing for first inspection and first maintenance is different: There is no specified exact time for the first inspection; generally, you can go to a 4S shop for the first inspection after three months. The first maintenance has clear regulations depending on the car model, with most models requiring it after six months or 5,000 kilometers. The cost responsibility for first inspection and first maintenance is different: The first inspection is free and borne by the 4S shop, while the first maintenance is mostly free and borne by the car manufacturer.

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Can I participate in the license plate lottery without a driver's license?

You cannot participate in the license plate lottery without a driver's license. Legal basis for driver's license: Article 57 of the "Regulations on the Application and Use of Motor Vehicle Driver's Licenses". The "Motor Vehicle Driver's License Application Form" must be filled out. Driver's license renewal time: Motor vehicle drivers should apply for a license renewal at the vehicle management office of the driver's license issuing authority within 90 days before the expiration of their motor vehicle driver's license. For the motor vehicle driver's license, a medical certificate issued by a county-level or higher medical institution or a military medical institution at the regimental level or above is required. If applying for a license to drive a small automatic transmission passenger vehicle for the disabled, a medical certificate issued by a specialized medical institution designated by the provincial health authority must be submitted.

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Can unopened gear oil still be used after 10 years?

Unopened gear oil cannot be used after 10 years. Function of gear oil: Gear oil mainly refers to the lubricating oil for transmissions and rear axles, which differs from engine oil in terms of usage conditions, composition, and performance characteristics. Its primary functions include lubricating gears and bearings, preventing wear and rust, and assisting in heat dissipation for gears. Introduction to gear oil: Gear oil should possess excellent anti-wear and load-carrying properties, along with appropriate viscosity. Additionally, it should have good thermal oxidation stability, anti-foaming characteristics, water separation performance, and rust prevention capabilities. Classification of gear oil: Gear oil is divided into two categories: automotive gear oil and industrial gear oil. The former is used for lubricating various manual transmissions and gear drive shafts in vehicles; the latter is employed in lubricating gear mechanisms across industries such as metallurgy, coal mining, cement production, and chemical processing.

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Can the fuel vehicle indicator be switched back after changing to an electric vehicle indicator?

The fuel vehicle indicator can be switched back after changing to an electric vehicle indicator. Low ignition energy causing shaking: When the engine temperature is too low, both fuel and lubricating oil temperatures are low. During a cold start, a richer air-fuel mixture is required, which demands higher ignition energy. If the spark plug gap is too large or the ignition coil and high-voltage coil are aged, it can lead to a decrease in ignition energy, causing the car to shake. Incorrect air-fuel mixture ratio causing shaking: During a cold start, if certain engine sensors or some sensor signals have significant errors, the ECU may make incorrect judgments. This results in inaccuracies in fuel injection timing and ignition timing control, leading to engine shaking. Uneven cylinder conditions causing engine shaking: In multi-cylinder engines, significant differences in ignition energy among cylinders, as well as varying degrees of wear on pistons and piston rings, can cause inconsistent compression ratios. This leads to uneven engine power output and results in engine shaking.

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Will points be deducted for not wearing a seat belt?

Points will be deducted for not wearing a seat belt. Main functions of seat belts: The primary functions of the shoulder belt and lap belt are to cushion the forward or backward inertia of the driver and passengers during an accident, keeping them as securely as possible in their seats. When correctly worn, the shoulder belt should cross the chest, and the lap belt should fit snugly over the hip bones. Avoid friction: When using seat belts, be careful not to let them rub against sharp-edged tools to avoid damaging the belts. Do not tilt the seat backrest too far, as this may prevent the seat belt from extending and retracting properly. When the seat is unoccupied, retract the belt into the retractor to prevent the buckle from hitting other objects during emergency braking. Proper installation of seat belts: Seat belts must be installed in conjunction with the seats and should not be removed arbitrarily. If a seat belt has been subjected to a strong stretching load during use, it should be replaced even if it appears undamaged. When cleaning dirty seat belts, use mild soap and water as a cleaning solution, and wipe with a cloth or sponge. Avoid using dyes and bleach, as they can corrode the belts and reduce their tensile strength. Also, refrain from using hard brushes to clean, as this may cause damage to the seat belts.

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Why Is the Car Air Conditioner Fan Not Working?

What are the pros and cons of an automotive intake booster pump?

Are the First Inspection and First Maintenance of a Car the Same?

Can I participate in the license plate lottery without a driver's license?

Can unopened gear oil still be used after 10 years?

Can the fuel vehicle indicator be switched back after changing to an electric vehicle indicator?

Will points be deducted for not wearing a seat belt?

Does car door painting require the entire door to be painted?

Does Cutting and Repairing a Car Roof Affect Safety?

What Causes the Car Tire Pressure Light to Illuminate?

Will the insurance company compensate for car tires?