Is it harmful to idle the car and turn on the air conditioner?

1 Answers
SanHeidi
07/30/25 2:26am
Idling the car and turning on the air conditioner can be harmful. Causes battery drain: While the air conditioner compressor is driven by the engine, the blower fan is powered by the battery. When the car is idling, it may not necessarily charge the battery. Excessive power consumption by the blower fan can lead to long-term battery drain. Risk of carbon monoxide poisoning: Idling with the air conditioner on means the engine is running at a low speed, which can result in incomplete fuel combustion. In such cases, if the windows and doors are closed, the poorly combusted exhaust gases can enter the car, increasing the risk of carbon monoxide poisoning for the driver. Increased fuel consumption: According to related tests, idling with the air conditioner on can increase fuel consumption. When the air conditioner is on, both the air conditioner unit and the condenser need to work, which creates additional resistance for the engine. To maintain stable idling, the engine requires more fuel, leading to higher fuel consumption compared to not using the air conditioner.
Was this review help?
15
4
Share
More Forum Discussions

What engine does the Great Wall Pao have?

The engine of the Great Wall Pao is a brand independently developed by China's Great Wall Motors, belonging to a domestically produced engine. The engine model of the Great Wall Pao is GW4020W, with a maximum power of 140kW, maximum horsepower of 190, and maximum torque of 360Nm. For daily maintenance of the Great Wall Pao engine, the following methods can be used: Use lubricating oil of appropriate quality grade. For gasoline engines, choose SD--SF grade gasoline engine oil based on the additional devices in the intake and exhaust systems and usage conditions; for diesel engines, select CB--CD grade diesel engine oil according to mechanical load, with the selection standard not lower than the requirements specified by the manufacturer. Regularly change the engine oil and filter. The quality of any grade of lubricating oil will change during use. After a certain mileage, the performance deteriorates, causing various problems for the engine. To avoid malfunctions, change the oil regularly based on usage conditions and keep the oil volume moderate. When the oil passes through the fine holes of the filter, solid particles and viscous substances in the oil accumulate in the filter. If the filter is blocked and the oil cannot pass through the filter element, it may burst the filter element or open the safety valve, allowing the oil to pass through the bypass valve and carry dirt back to the lubrication area, accelerating engine wear and increasing internal contamination. Regularly clean the crankcase. During engine operation, high-pressure unburned gases, acids, moisture, sulfur, and nitrogen oxides from the combustion chamber enter the crankcase through the gap between the piston rings and cylinder walls, mixing with metal powder from part wear to form sludge. A small amount remains suspended in the oil, while a large amount precipitates, blocking the filter and oil holes, making engine lubrication difficult and causing wear. Regularly use a radiator cleaner to clean the radiator. Removing rust and scale not only ensures the normal operation of the engine but also extends the overall lifespan of the radiator and engine.
11
0
Share

Does the 90-day period for a driver's license include the current day?

Does the 90-day period for a driver's license include the current day? The following is a brief introduction about the expiration of a driver's license: 1. Renewal on the same day: The 90-day period includes the current day, and you can renew on the same day. You can also renew normally within one year after expiration, but you cannot drive even one day after expiration, otherwise, if caught by traffic police, it may be treated as driving without a license. 2. Expired license: If the renewal of the driver's license exceeds the expiration date by a few days but less than one year, you can still bring your ID card, driver's license, physical condition certificate, driver's license photo, and other materials to the local vehicle management office of the public security traffic police to apply for renewal of the driver's license according to the normal renewal process. 3. Legal requirements: According to the "Regulations on the Application and Use of Motor Vehicle Driver's Licenses," you can apply for a new driver's license 90 days before the expiration date of the current license. Within one year after the expiration date, you can also submit identity proof, physical condition proof, and other renewal materials to the vehicle management office of the public security traffic police to complete the renewal process.
4
1
Share

What to Do When the Mercedes-Benz Audio Suddenly Has No Sound?

If the Mercedes-Benz audio suddenly has no sound, first check if the CD player's power supply is normal. As long as there is power, the indicator light should be on, and the CD player's compartment should open and close normally. If there is no power, check the power supply, including the fuse box and wiring. The technical indicators of car audio include: 1. Output Power: Most of the power ratings labeled on current main units are music power, ranging between 40W and 60W. The power should not be too large. 2. Frequency Response: The frequency range audible to the human ear is between 20Hz and 20KHz. Therefore, this indicator should at least cover this range, and the wider, the better. 3. Signal-to-Noise Ratio: This refers to the ratio of the music signal to noise. Generally, high-end car audio systems have a ratio above 90DB. The higher this value, the better. 4. Harmonic Distortion: This indicator reflects the fidelity of sound reproduction. The smaller the value, the higher the fidelity, and the better the audio effect.
2
5
Share

What to Do If You Forget to Close the Car Window in Heavy Rain and Water Gets Inside?

If a small amount of water enters the car due to leaving the window open in the rain, the impact is generally minimal. However, as a precaution, it's best not to turn on any electronic devices inside the car, such as lights or starting the engine, to prevent short circuits caused by water exposure. You can use the key to open the car door. If it's still raining, cover the car with an umbrella or waterproof cloth. Precautions for handling water inside the car in the afternoon: 1. Note 1: Wet seats may develop mold. Avoid using a hot air blower to dry them. If the seats have a heating function, you can use it to speed up water evaporation. After air-drying, use a leather cleaner and conditioner. For sponge seats, you can remove the entire seat and air-dry the sponge inside. 2. Note 2: Do not completely soak the carpet in water for scrubbing. On one hand, this can damage the adhesion between different layers of the carpet material. On the other hand, it may take a long time for the carpet to dry completely, affecting its usability and causing dampness inside the car.
16
5
Share

Can I Take the Subject 2 Test Without an ID?

You cannot take the Subject 2 test without an ID card. However, if your ID card is lost or expired, you can use a temporary ID. If you do not have an ID card and need to use a temporary ID, you must inform the driving test instructor in advance and follow the driving school's arrangements for the test. According to Article 19, Paragraph 1 of the "Regulations on the Application and Use of Motor Vehicle Driving Licenses," "first-time applicants for a motor vehicle driving license must fill out an application form and submit their identity proof." Therefore, you can take the Subject 2 test with a temporary ID. Additionally, please note that the validity period of a temporary resident ID is three months. You can take the Subject 2 test within this period, but you will not be allowed to enter the test site if the ID expires. Therefore, make sure to take the test within the validity period of the document. If the temporary ID expires due to special circumstances, you should promptly apply for a formal ID or a new temporary ID. Subject 2, also known as the small road test, is part of the motor vehicle driving license assessment and refers to the field driving skills test. For small vehicles (C1/C2), the test items include five mandatory components: reversing into a parking space, parallel parking, stopping and starting on a slope, turning at a right angle, and driving through curves (commonly known as the S-curve). Some regions may include a sixth item: highway card collection. According to Article 25 of the "Regulations on the Application and Use of Motor Vehicle Driving Licenses" (Ministry of Public Security Order No. 123), starting from June 1, 2021, the C2 and C5 Subject 2 tests no longer include the stopping and starting on a slope component. For large vehicles (AB licenses), Subject 2 covers 16 items: According to the "Regulations on the Application and Use of Motor Vehicle Driving Licenses," the AB license Subject 2 test includes the following 16 items: reversing into a parking space, passing through continuous obstacles, driving through curves, highway simulation test, narrow gate, bumpy road, single-plank bridge, narrow road U-turn, stopping and starting on a slope, parallel parking, highway emergency accident handling, mountain road simulation, turning at a right angle, rain and fog weather simulation, highway tire blowout, and tunnel simulation driving.
1
5
Share

What to Do When the Car Windshield Gets Blurry Due to Rainwater?

Here are some methods to deal with a blurry car windshield caused by rainwater: 1. Turn on the air conditioning: You need to turn on the cold air and adjust the angle of the air vents so that the cold air blows toward the front windshield. 2. Soapy water: You can use soap to wipe the mirror, wait for the soapy water to dry completely, and then wipe it clean with a clean paper. 3. Anti-fog spray: Anti-fog spray can be used for prevention and solution. Just spray a little anti-fog spray on the front windshield of the car in advance, which can effectively solve the problem of fogging on the windshield, and it is more convenient and quicker than soapy water. Additional information: Here are some precautions for driving in the rain: 1. Maintain good visibility: Turn on the wipers in time to avoid blurred vision. If the light is dim, also turn on the low beam and fog lights. 2. Prevent skidding: In rainy weather, the grip performance of car tires decreases, making it easy to skid. Therefore, try to maintain straight and low-speed driving. 3. Avoid forcing overtaking: When driving in the rain, the driver's vision is blurred, the field of view narrows, and the road surface is slippery. Forcing overtaking by crossing lanes can easily cause the wheels to skid with just a slight movement of the steering wheel, which may lead to accidents.
3
2
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.