What to Do When the Car AC Has Normal Low Pressure but Low High Pressure?

1 Answers
VonBrooklyn
07/29/25 5:28pm
When a motor vehicle's air conditioning system shows normal low pressure but low high pressure, it is typically caused by a malfunctioning AC compressor. In such cases, the AC compressor needs to be inspected and repaired. If repair is not possible, replacement is necessary. After replacing the compressor, refrigerant must be replenished before the system can be used. Relevant information about the intercooler is as follows: 1. Introduction: The intercooler is essentially a supporting component for turbocharging and is generally only found in vehicles equipped with a turbocharger. 2. Function: Its role is to reduce the temperature of the compressed air, thereby lowering the engine's thermal load, increasing air intake, and consequently boosting the engine's power.
Was this review help?
11
3
Share
More Forum Discussions

Is Maintenance Needed Before Selling a Car?

It is advisable to perform a simple maintenance and cleaning of the car before selling it. Before Selling: Conducting a simple maintenance and cleaning before selling the car can make it appear cleaner and tidier, creating a positive visual impression on potential buyers. Unlike vehicles from dealerships, private cars are often preferred because they are perceived to be in better overall condition. Timely maintenance can be a plus in the eyes of buyers. Vehicle Condition: Today's consumers place great emphasis on vehicle condition when purchasing a car. Before selling, consider performing a performance check to identify any issues. This can build trust between both parties and help set a reasonable price range based on the car's condition, making the process more efficient. Additionally, you can provide the buyer with the car's dual-record report. Nowadays, this can be easily accessed by entering the VIN (Vehicle Identification Number) through the Wukong Car Check official account on WeChat. You can let the buyer check it themselves or provide them with the obtained dual-record report. Having it in black and white adds credibility and helps the buyer better understand the car's history.
10
5
Share

Is it allowed to cross the line in a left-turn waiting lane?

It is allowed to cross the line in a left-turn waiting lane because the left-turn waiting area is marked with dashed lines. Vehicles can cross the line but must not exceed it and should follow the traffic markings. Currently, crossing the line in a left-turn waiting lane is not considered a traffic violation. Traffic regulations: At intersections with designated lanes, enter the appropriate lane based on the intended direction of travel; yield to vehicles already inside the intersection when preparing to enter a roundabout; when making a left turn, turn from the left side of the intersection center point. Activate the turn signal when turning and use low beams when driving at night; proceed in order when the signal permits; stop in order beyond the stop line when the signal requires stopping. If there is no stop line, stop beyond the intersection; when making a right turn and encountering a vehicle in the same lane waiting for the signal, stop and wait in order; at intersections without directional signal lights, turning vehicles must yield to straight-moving vehicles and pedestrians. Right-turning vehicles from the opposite direction must yield to left-turning vehicles. Crosswalk: It is allowed to cross the crosswalk when entering the left-turn waiting area because the crosswalk signal is red, and pedestrians should not cross. However, if pedestrians enter the intersection during a yellow light, drivers should yield to them.
5
5
Share

Can a motorcycle's ECU be replaced?

Motorcycle's ECU can be replaced. ECU is the central computer: The ECU of an electronically fuel-injected motorcycle serves as the central computer. The electrical circuits of electronically fuel-injected motorcycles have achieved high integration, intelligence, and systematization. The entire wiring system functions as a unified whole, where all electronic signals from various subsystem sensors converge to the central computer. After calculation, these signals are then distributed to the actuators of each subsystem to perform their tasks. Functions of the ECU: Fuel supply function, ignition control function, fault diagnosis function, and basic expansion functions. Current electronically fuel-injected systems installed in vehicles operate under closed-loop control. This means the ECU determines whether combustion is normal by detecting the oxygen content in the exhaust via the oxygen sensor, thereby deciding the fuel injection pulse width to precisely control the fuel injection quantity. This is a crucial method for enhancing the engine performance of fuel-injected motorcycles and improving fuel economy.
18
5
Share

Where is the blind spot of the right rearview mirror located?

The blind spot of the right rearview mirror is located at an angle of 30 to 45 degrees in the mirror's field of view, which corresponds to the left rear or right rear 30 to 45 degrees of the vehicle. This area cannot be seen in the mirror and requires turning your head to view. Here are some methods to address the blind spot of the right rearview mirror: Install a wide-angle rearview mirror: A wide-angle rearview mirror attached to the edge of the left or right rearview mirror can significantly reduce the blind spot, essentially meeting all needs for overtaking and lane changes. Installing such a wide-angle rearview mirror is the simplest and most convenient way to eliminate blind spots. Use peripheral vision: Practice using your peripheral vision to observe vehicles or pedestrians behind you. Experienced drivers glance at the rearview mirror every few minutes while driving. While checking the rearview mirror, they also use their peripheral vision to scan the right rear window to monitor the surroundings of the vehicle. This ensures safe overtaking and lane changes, preventing accidents. Develop good habits: Cultivate the habit of using turn signals when overtaking or changing lanes. Additionally, pay attention to feedback from the vehicle being overtaken. If you hear rapid honking or see intense flashing lights, immediately stop overtaking or changing lanes and reduce your speed.
7
0
Share

Why does the Lavida front assist system malfunction?

Lavida front assist system malfunctions due to sensor issues, sensor overheating, prolonged driving time, and reduced machine break-in. Lavida front assist system maintenance requires comprehensive cleaning and timely inspection of the front assist system. Sensor overheating: Sensor overheating can cause problems with the front assist system, preventing it from clearing fault codes promptly, thereby affecting vehicle usage. Prolonged driving time and reduced machine break-in will weaken the sensor, leading to system failures. Lavida front assist system maintenance: Lavida front assist system maintenance must be timely. Delayed maintenance can lead to aging of the front assist system and affect the wiring. It is essential to inspect the assist system promptly, identify issues in time, and resolve the aging problems of the front assist system.
13
2
Share

How many points are deducted for incorrect simulated lighting at night?

Incorrect simulated lighting at night results in a deduction of 100 points, leading to an immediate failure. Introduction to Subject 3: Subject 3 includes the road driving skills test and the safe and civilized driving knowledge test. It is part of the motor vehicle driver's license assessment and is the abbreviation for the road driving skills and safe and civilized driving knowledge test in the motor vehicle driver's examination. Common mistakes in the nighttime simulated lighting test: Failing to correctly turn on the lights; using high beams when following another vehicle closely in the same direction; not alternating between high and low beams when passing sharp curves, slopes, arched bridges, crosswalks, or intersections without traffic signals; not using low beams as required when meeting another vehicle; using high beams when passing intersections; not alternating between high and low beams to alert the vehicle being overtaken during overtaking; using high beams when driving on well-lit roads with streetlights; not turning off headlights or not turning on position lights when temporarily parked on the roadside.
5
1
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.