What Causes Excessive Pressure in Car Air Conditioning?

1 Answers
DelLukas
07/30/25 6:28am
The car air conditioning system is a device that cools, heats, ventilates, and purifies the air inside the vehicle, providing a comfortable environment for passengers, reducing driver fatigue, and improving driving safety. The reasons for excessive pressure in the car air conditioning system are as follows: 1. Cooling water: Insufficient cooling water flow or excessively high water temperature. 2. Condenser tube: Excessive dirt buildup or blockage in the condenser copper tubes or fins, leading to poor heat exchange efficiency. 3. Excessive refrigerant: This is indicated by a hot feeling at the exhaust outlet. 4. Air in the system: If there is air in the system, the refrigerant should be completely evacuated and refilled. 5. Expansion valve: A malfunctioning expansion valve is indicated by heavy condensation or frost on the low-pressure pipe. Check if the expansion valve is installed correctly, and if it is, the expansion valve needs to be replaced.
Was this review help?
16
2
Share
More Forum Discussions

How many kilometers can an auxiliary fuel tank drive?

An auxiliary fuel tank can drive approximately 40 kilometers. General classification: Fuel tanks can be divided into two types: open tanks and closed tanks. Open tanks have the liquid surface inside the tank in contact with the atmosphere, and an air filter is installed on the tank cover. Open tanks have a simple structure and are easy to install and maintain, making them commonly used in hydraulic systems. Closed tanks are generally used for pressurized tanks, filled with a certain pressure of inert gas, with a charging pressure of up to 0.05MPa. Classification by tank shape: They can also be divided into rectangular tanks and cylindrical tanks. Rectangular tanks are easy to manufacture and convenient for placing hydraulic components, so they are widely adopted. Cylindrical tanks have high strength, are lightweight, and easy to clean, but they are more difficult to manufacture and take up more space, often used in large metallurgical equipment.
20
2
Share

Is there a fine for exceeding the motorcycle annual inspection by 10 days?

If the vehicle inspection is overdue, traffic police may impose a fine of 200 yuan and deduct 3 points. According to the new Regulation No. 124: Motor vehicles that fail to obtain the inspection qualification mark within three consecutive inspection cycles after the expiration of the inspection validity period shall be deregistered. Therefore, the vehicle will be deregistered if it exceeds three cycles. Relevant information about vehicle annual inspection is as follows: Introduction: Vehicle annual inspection (Vehicles-inspection), also known as motor vehicle inspection. Depending on the nature of the motor vehicle's use, the inspection items and scope may vary. Inspection items: According to the definition in RB/T218-2017 "Requirements for Qualification and Competence Evaluation of Inspection and Testing Institutions - Motor Vehicle Inspection Institutions," motor vehicle inspection includes three categories: motor vehicle safety technical inspection, motor vehicle emission inspection, and comprehensive performance inspection of automobiles.
17
3
Share

Can Cola Repair Yellowed Headlights?

Cola cannot repair yellowed headlights. Here is relevant information about car maintenance: First maintenance: Some manufacturers set the first maintenance based on time or mileage. The exact timing for the first maintenance should be referred to the vehicle's user manual or warranty manual. The first maintenance is very important and free, so be sure to remember to do it to avoid missing it, which could affect the car's third maintenance. Maintenance items: The main car maintenance items include replacing engine oil, oil filter, transmission fluid, spark plugs, air conditioning filter, air filter, brake fluid, etc. However, not all of these need to be replaced every time; it depends on their service life. In addition, maintenance also involves the inspection and upkeep of dozens of items across multiple systems, including the engine, transmission, air conditioning system, steering system, braking system, suspension, body, and tires.
7
2
Share

Where is the cabin air filter located in the Chery Fengyun 2?

The cabin air filter of the Fengyun 2 is located in the engine compartment. The specific position is: stand at the front of the car, facing the engine, in the upper left part of the engine compartment. 1. The Chery Fengyun 2 is a brand-new lifestyle vehicle (including both sedan and hatchback versions) developed on the current Chery Fulwin platform. 2. The Fengyun 2 is equipped with Chery's self-developed ACTECO 1.5L engine, with the whole vehicle's crash performance meeting the C-NCAP four-star standard. It integrates advanced technologies such as "ABS+EBD", emergency locking seat belts, optional four airbags, and side reinforcement steel anti-collision bars. 3. The exterior design of the Fengyun 2 differs significantly from the conservative styling approach of older Chery models. The Fengyun 2 features a revolutionary redesign, incorporating more fashionable and avant-garde elements. It is powered by Chery's self-developed ACTECO 1.5L engine, with the whole vehicle's crash performance meeting the C-NCAP four-star standard, integrating advanced technologies such as "ABS+EBD", emergency locking seat belts, optional four airbags, and side reinforcement steel anti-collision bars.
20
1
Share

What are the techniques for shifting from first gear to second gear in a manual transmission?

Here are the techniques for shifting from first gear to second gear in a manual transmission: 1. Place in neutral before shifting: Before shifting to second gear, first move the gear lever to the neutral position, then shift into second gear based on speed. 2. Don't shift too quickly: Shifting too quickly can easily cause wear on the transmission. The shifting techniques can be summarized with the following mnemonic: 1. 1 to 2, 2 to 3, 3 to 4 are all 'straight-line' movements. 2. 5 to 4, 4 to 3, 2 to 1 are also 'straight-line' movements. 3. 4 to 5, 3 to 2 are 'curved-line' movements. Here are some bad habits to avoid when shifting gears in a manual transmission car: 1. Not returning to neutral when shifting. 2. Using the clutch instead of neutral. 3. Not downshifting when slowing down, using the half-clutch to pull the speed back. 4. Habitually resting your left foot on the clutch pedal during normal driving.
5
1
Share

Do motorcycle decals require registration?

Whether motorcycle decal modifications require registration depends on the extent of the decals. If the main body color of the vehicle is not altered, the decals do not cover more than 50% of the body, and they do not obstruct the driving of other vehicles, then registration with the vehicle management office is not required. Relevant regulations: According to the motor vehicle registration regulations, any changes to the body color, model, performance, purpose, or structure of a licensed motor vehicle, including replacement of the frame, body, or engine, must be reported to the vehicle management office for modification registration. Benefits of wheel rim modifications: Upgrading to a set of high-quality wheel rims can improve heat dissipation and achieve weight reduction, offering high visual impact both statically and dynamically, while also enhancing the vehicle's handling performance. Increasing the diameter and width of the rims and reducing the tire profile can overall improve the tire's grip.
3
1
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.