What is the refrigerant pressure for Volkswagen air conditioning?
2 Answers
Volkswagen air conditioning refrigerant conditions vary, so the pressure also differs. At compressor speeds of 1500~2000 rpm: The high pressure (discharge pressure) is normally around 1.5~2.0 MPa, and the low pressure (suction pressure) is around 0.15~0.35 MPa. At idle speed (engine 700~900 rpm): If the ambient temperature is high, such as under direct summer sunlight, the high pressure may be slightly higher, reaching up to around 2.5~2.8 MPa, but it generally does not exceed 3.1 MPa.
Regarding Volkswagen car air conditioning refrigerant pressure, I've discussed this several times with my mechanic friend. Generally, at idle speed, the low-pressure side should be around 25 to 40 PSI, while the high-pressure side ranges between 150 to 250 PSI. However, this depends on whether it's hot or cold outside – in hot weather, the high pressure can exceed 250 PSI. I've tried maintaining my old Volkswagen myself, and if the pressure isn't right, the AC either blows warm air or has poor cooling, turning the car into a sauna. If the pressure is too high, the compressor might get clogged or damaged; if it's too low, there could be a refrigerant leak, so it's important to regularly check the system's seals. The safest approach is to visit a professional shop and use specialized tools for testing. Don't try to be clever and add refrigerant randomly – proper pressure balance ensures fuel efficiency and extends the system's lifespan. Remember, the most accurate readings are taken while the engine is running.
