What are the reasons why the car air conditioning cannot start?

What is the function of a car's activated carbon canister?

The function of a car's activated carbon canister is to prevent fuel vapors from escaping into the atmosphere after the engine stops running. The working principle of the activated carbon canister: When the engine is running, the ECU controls the opening and closing of the carbon canister solenoid valve based on signals such as engine speed, temperature, and air flow to regulate the vacuum level in the upper part of the emission control valve, thereby controlling the valve's opening. When the emission control valve opens, fuel vapors are drawn into the intake manifold through the valve to participate in combustion. Notes on the activated carbon canister: Owners may encounter difficulty starting the engine due to an overfilled fuel tank, which could indicate a problem with the gasoline evaporation control system where the carbon canister is located.

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What are the differences between China 5 and China 6?

The differences between China 5 and China 6 emission standards are as follows: Different emission standards: China 6 emission standards are more than 30% stricter than China 5. Excluding the influence of driving conditions and testing, gasoline vehicles' carbon monoxide emissions are reduced by 50%, total hydrocarbons and non-methane hydrocarbons emissions are reduced by 50%, and nitrogen oxide emissions are reduced by 42%. Different implementation times: The China 5 standard was implemented nationwide on January 1, 2017, as the fifth stage of national motor vehicle emission standards. China 6 was implemented starting July 1, 2019. Different principles: During the China 5 stage, diesel and gasoline vehicles had different emission standards, but China 6 adopts a fuel-neutral principle, meaning the emission limits are the same regardless of the fuel type. Different issuing departments: The China 5 standard was issued by the Ministry of Environmental Protection. The China 6 standard was issued by the Ministry of Environmental Protection and the General Administration of Quality Supervision, Inspection, and Quarantine. Different letter representations: China 5 is represented by 'V', while China 6 is represented by 'VI'. Different monitoring requirements for plug-in hybrid electric vehicles: Compared to China 5, China 6 has improved monitoring requirements for plug-in hybrid electric vehicles, including regulations on energy storage systems, thermal management systems, brake regeneration, drive motors, generators, etc. China 5 standard limits are as follows: Gasoline vehicles must not emit more than 1,000 milligrams of carbon monoxide per kilometer driven. Gasoline vehicles must not emit more than 68 milligrams of non-methane hydrocarbons per kilometer driven. Gasoline vehicles must not emit more than 60 milligrams of nitrogen oxides per kilometer driven. Gasoline vehicles must not emit more than 4.5 milligrams of PM (particulate matter) per kilometer driven. China 6 has two standards: China 6a and China 6b, as follows: China 6a standard limits: Gasoline vehicles must not emit more than 700 milligrams of carbon monoxide per kilometer driven. Gasoline vehicles must not emit more than 68 milligrams of non-methane hydrocarbons per kilometer driven. Gasoline vehicles must not emit more than 60 milligrams of nitrogen oxides per kilometer driven. Gasoline vehicles must not emit more than 4.5 milligrams of PM per kilometer driven. China 6b standard limits: Gasoline vehicles must not emit more than 500 milligrams of carbon monoxide per kilometer driven. Gasoline vehicles must not emit more than 35 milligrams of non-methane hydrocarbons per kilometer driven. Gasoline vehicles must not emit more than 35 milligrams of nitrogen oxides per kilometer driven. Gasoline vehicles must not emit more than 3 milligrams of PM per kilometer driven. Affected by the China 6 emission policy, although China 5 vehicles are not currently restricted from normal use, such as travel or license plate restrictions, their resale value is significantly impacted. For truck owners who purchase vehicles on loan for cargo transport, the depreciation of the vehicle after paying off the loan is equivalent to the net profit earned during that period. A higher residual value means more profit for the owner. Therefore, from this perspective, China 6 vehicles, which have a longer service life and more road rights, offer greater advantages.

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What are the symptoms of damaged car spark plugs?

Car spark plug damage symptoms include: 1. Difficulty starting; 2. Low power; 3. Excessive exhaust emissions; 4. Increased fuel consumption. The working principle of spark plugs is: The spark plug's ground electrode is connected to the metal shell, which is threaded into the engine block through the cylinder head. The electrode repeatedly generates electrical pulses, creating a high-voltage pulse that ionizes the air between the two electrodes, forming a spark and causing an explosion to ignite the air-fuel mixture in the cylinder, thereby starting the engine. Types of spark plugs include: 1. Standard spark plugs; 2. Projected insulator spark plugs; 3. Electrode-type spark plugs; 4. Seat-type spark plugs; 5. Pole-type spark plugs; 6. Surface-gap spark plugs.

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How long does it take to charge a dead car battery by driving?

It takes about 4 hours of driving to fully charge a dead car battery. The reasons for a car battery running out of power include: 1. Short driving distances; 2. Frequent engine starts; 3. Electrical circuit issues; 4. The engine not charging the battery; 5. Battery failure; 6. Prolonged use of high-power electrical devices; 7. Electrical devices left on after locking the vehicle; 8. Short circuits, open circuits between battery poles, or loose battery terminal clamps. The functions of a car battery are: 1. To power the starting system, ignition system, and electronic fuel injection system when starting the engine; 2. To supply power to the car's electrical devices when the engine is off or idling at low speed; 3. To assist in powering electrical devices when the generator's output is insufficient; 4. To buffer voltage spikes in the electrical system and protect the car's electronic devices; 5. To store excess electricity generated by the alternator.

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Can a car run normally without an ECU?

Without an ECU, a car cannot run normally. The ECU is known as the brain of the engine. There are many sensors and actuators around the engine, and the ECU can collect data from various sensors. After processing, it can control the engine operation through the actuators. The ECU is a computer board fixed in the engine compartment, which can be found after opening the engine hood. The ECU's metal casing has certain waterproof properties and is equipped with heat sinks to help dissipate heat. When washing the car, avoid directly spraying water into the engine compartment with a hose, as this may damage the ECU and electronic sensors inside the engine compartment.

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What Does Car Maintenance Include?

Car maintenance includes: 1. Changing the engine oil, oil filter, and cleaning the air filter, checking whether the generator belt and wiper blades are damaged; 2. Checking whether the levels of various fluids are normal; 3. Checking whether the tire pressure is normal and whether the tires have uneven wear, bulges, or damage; 4. Inspecting the car chassis, including the brake pads, brake discs, connecting rods, ball joints, and CV joints for any scratches; 5. Checking whether all the switches and lights in the car are working properly. Precautions for car maintenance include: 1. Making an appointment in advance; 2. Recording any faults or questions encountered during daily driving and informing the staff during maintenance registration.

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What are the reasons why the car air conditioning cannot start?

What is the function of a car's activated carbon canister?

What are the differences between China 5 and China 6?

What are the symptoms of damaged car spark plugs?

How long does it take to charge a dead car battery by driving?

Can a car run normally without an ECU?

What Does Car Maintenance Include?

How Often Should the Car Air Conditioning Filter Be Replaced?

Where to Add Windshield Washer Fluid in a Car?

Which Button is the Car Air Conditioning Button?

Does the car throttle need to be matched after cleaning?