How to Remove Odors from a New Haval M6?

What is the pressure of 134a?

Automotive air conditioning 134a pressure standards: The normal high pressure should be 1.3-1.7MPa or 13-17kg/cm2, and the normal low pressure should be between 0.15-0.25MPa or 1.5-2.5kg/cm2. In summer under direct sunlight, the high pressure may be slightly higher, up to about 2.5-2.8MPa, but generally does not exceed 3.1MPa. Automotive air conditioning refrigerant, commonly referred to as Freon, is also known as "refrigerant" or "coolant" in the market, and is divided into environmentally friendly (R134a) and non-environmentally friendly (F12). R134a is the most widely used medium-low temperature environmentally friendly refrigerant. It has excellent comprehensive performance, making it a very effective and safe alternative to dichlorodifluoromethane (CFC-12), and can be applied in most areas where CFC-12 is used. To measure the high and low pressure of the automotive air conditioning system, the engine should be idling, and the measurement should be taken at an ambient temperature of 35 degrees Celsius. If the low pressure is higher or lower than this range, it indicates abnormal expansion valve regulation. When the engine throttle is increased, the measured low pressure should decrease with the engine speed. The faster the speed, the faster the pressure drops, indicating good compressor performance. Otherwise, it indicates a compressor fault. The outermost ring of the low-pressure gauge shows the MPa value. For example, if the pointer points to "3," the current pressure is 0.3MPa. The second ring from the outside to the inside on the low-pressure gauge shows the value in kg/cm2. The innermost ring of the high-pressure gauge shows the bar value in red. For example, if the pointer points to "20," the current pressure is 20bar. The conversion formula for different pressure units is: 1MPa ≈ 101kg/cm2 ≈ 10bar ≈ 145Psi.

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How to Perform Throttle Body Matching?

Throttle body matching methods generally include manual matching, power-off matching, and diagnostic tool matching. Below are the relevant introductions to throttle body matching methods: 1. Manual matching method: For mechanical cable-type throttle bodies, manual reset is used. By turning the ignition switch on and off several times consecutively, the vehicle's onboard computer will delete the original throttle memory and store new throttle data. To verify success, simply start the vehicle and ensure it runs normally. 2. Power-off matching method: After replacing the throttle body, disconnect the negative terminal of the battery for a few minutes. The vehicle will enter a dormant state, during which the onboard computer's original memory will reset to factory settings. However, this method is only suitable for lower-end models. Simply start the vehicle and test-run it normally to confirm success. 3. Diagnostic tool matching method: Use a dedicated diagnostic tool to read data, then follow the prompts to reset adaptive values to zero, clear fault codes, start the vehicle, and ensure it runs normally, indicating successful matching.

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Tips for Making a U-Turn While Driving

The techniques for making a U-turn while driving include: completing the turn in one go; utilizing T-intersections for U-turns; combining forward and reverse movements to execute the turn; and using overpasses or roundabouts for U-turns. Permissible U-turn scenarios: Presence of U-turn traffic lights or signs: When there is a traffic light permitting U-turns at an intersection, you may proceed. No U-turn signs but left turns allowed (absence of prohibited U-turn markings): Vehicles can make U-turns at intersections where left turns are permitted and no prohibitive signs or road markings exist. It's crucial to ensure that the maneuver does not disrupt the normal flow of traffic and to follow the left-turn signal indications. If turning at an intersection with a left-turn waiting zone, you may enter the waiting area during a green light for straight traffic and complete the U-turn when the left-turn signal turns green. U-turns permitted at dashed lines: Both white and yellow dashed lines allow U-turns. For double yellow lines (one solid, one dashed), check if your side has the dashed line – if so, a safe U-turn is permitted; if solid, U-turns are prohibited. At intersections with such markings, U-turns can be made from the dashed-line side without crossing the stop line. Yellow grid zones permit U-turns: While stopping is prohibited in yellow grid areas, U-turns are allowed provided there's no central barrier, after yielding to through traffic. U-turns allowed on the dashed side of medians: When the median's approach is marked with dashed lines, vehicles on that side may U-turn. With solid lines, drivers must obey traffic signals, cross the pedestrian crossing before turning, and never cross solid lines or zebra crossings during the maneuver. U-turn precautions: Always activate the left turn signal in advance, maintain speed below 30 km/h, and ensure the action doesn't hinder other vehicles or pedestrians.

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What Vehicles Use Run-Flat Tires?

Run-flat tires are used in brands such as BMW, Volvo S60, Ford S-MAX, Volkswagen R36, Mercedes-Benz, Audi, etc. Below is relevant information about run-flat tires: 1. Introduction to Run-Flat Tires: Run-flat tires are technically called "Tire Pressure Monitoring System (TPMS)". The inflated tire sidewall is the main part supporting the vehicle's weight, especially for tires with a larger aspect ratio (the ratio of tire height to width), where the sidewall is very "thick". 2. Differences Between Run-Flat Tires and Regular Tires: The sidewall of run-flat tires is very thick, and the inflated tire sidewall is the main part supporting the vehicle's weight. 3. Structure of Run-Flat Tires: Run-flat tires consist of an outer tire, a common inner tube, a spare inner tube, a steel rim, a gas generator, a pressure sensor, and a control unit. Run-flat tires have special symbols after the specifications on the tire sidewall, which regular tires do not have.

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How long can the car fan still run after the engine is turned off?

After the car is turned off, the fan can still run for 10 minutes. Relevant information is as follows: 1. Engine: If the engine coolant temperature at the moment of parking is higher than the acceptable soaking temperature of the engine, the vehicle's computer will automatically calculate the fan's operating speed and time, thereby automatically controlling the fan's operation. The higher the temperature of the motor, the longer the fan will run after stopping. When the temperature of the motor coolant drops below the soaking temperature, the fan will shut off, thereby protecting the motor and extending its service life. 2. Cooling system: The car's cooling system is divided into a large circuit and a small circuit. When the engine is cold and the temperature is low, the engine needs to reach the working temperature of 90° as quickly as possible, so the small circuit will operate first. Once the temperature rises to normal, the thermostat opens, and the large circuit begins to operate, allowing the antifreeze to start flowing through the radiator.

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How soon can I schedule the Subject 4 test after passing Subject 3 in Sichuan?

After passing Subject 3, there are three scenarios for scheduling the Subject 4 test: 1. Taking the test directly on the same afternoon; 2. No need to schedule within 9 days—you can take the Subject 4 test at the designated location with your ID within 9 days after passing Subject 3; 3. Scheduling after 10 days, with success depending on the current number of test-takers, the priority of the student, and temporary arrangements at the test center. The specific scenario depends on the driving school's arrangements. Subject 4, also known as the theoretical test or driver's theory test, is part of the motor vehicle driver's license examination. The main content includes: safe and civilized driving operation requirements, safe driving knowledge under adverse weather and complex road conditions, emergency handling methods for situations like tire blowouts, and post-accident handling knowledge. The Subject 4 test consists of 50 questions, primarily in the form of case studies, images, and animations. The total score is 100, with a passing score of 90.

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How to Remove Odors from a New Haval M6?

What is the pressure of 134a?

How to Perform Throttle Body Matching?

Tips for Making a U-Turn While Driving

What Vehicles Use Run-Flat Tires?

How long can the car fan still run after the engine is turned off?

How soon can I schedule the Subject 4 test after passing Subject 3 in Sichuan?

What does the T in car displacement mean?

What does R-line represent in cars?

What Causes the Mercedes Hood Alarm?

Is the quality of cars with sunroofs the same as those without?