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What Causes High Low Pressure and Low High Pressure in Car Air Conditioning?

1 Answers

RoseAnn

07/29/25 1:55pm

High low pressure and low high pressure conditions occur because the compressor displacement cannot meet the requirements, or the expansion valve is faulty. Below is relevant information about car air conditioning: 1. Introduction to Car Air Conditioning: Car air conditioning consists of a compressor, condenser, throttle element, evaporator, fan, and necessary control components, forming an air conditioning system that regulates the temperature and humidity inside the vehicle to provide a comfortable environment for the driver. 2. Working Principle: When the compressor operates, it sucks in low-temperature, low-pressure gaseous refrigerant from the evaporator. After compression, the temperature and pressure of the refrigerant increase, and it is sent to the condenser. Inside the condenser, the high-temperature, high-pressure gaseous refrigerant transfers heat to the outside air passing through the condenser, causing it to liquefy and turn into a liquid.

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What causes the SVS warning light in diesel vehicles?

Diesel vehicle SVS warning light is triggered by engine malfunctions. The causes include: 1. Fuel emission system failure; 2. Intake tract malfunction; 3. Spark plug carbon buildup; 4. Sensor failure; 5. Poor fuel quality; 6. Engine carbon deposits; 7. Three-way catalytic converter failure; 8. Engine knocking. Solutions for SVS light illumination: 1. Check oxygen sensor connector for looseness; 2. Clean spark plugs; 3. Replace oxygen sensor; 4. Replace three-way catalytic converter; 5. Clean engine; 6. Drain old gasoline from tank and refill with premium fuel. SVS operational principle: The light activates when ignition is turned on and extinguishes after engine start. If ECU detects faults during operation, the SVS light illuminates, indicating engine malfunction.

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Which gear is the starting gear for an automatic transmission car?

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