What Causes a Loud Hissing Noise Like Air Leakage in a Car?
2 Answers
There are several reasons why a car may produce a loud hissing noise similar to air leakage: Faulty Air Conditioning Compressor: Slippage of the internal clutch can cause abnormal noises when the air conditioning system is operating. Loose Clutch: When the car's air conditioning is turned on, the engine load increases simultaneously, which can cause the car's clutch to vibrate and produce abnormal noises. Clogged Air Conditioning Filter: The car air conditioning system is an air regulation device installed in the vehicle, capable of cooling, heating, ventilating, and purifying the air inside the cabin. A clogged filter can result in abnormal noises. The air conditioning system provides a comfortable environment for passengers, reduces driver fatigue, and enhances driving safety, making it one of the key indicators of a well-equipped car.
Last time my car made a loud noise like air leaking, sounding like hissing plus explosions, especially louder when stepping on the gas. Inspection revealed a big hole in the exhaust pipe, caused by years of corrosion, with hot exhaust gases spewing out making the loud noise. Some other cases involve leaks in the turbocharger's intake or aging and cracked vacuum tubes—those small pipes are responsible for vacuum pressure in the brakes or AC, and they make noise once broken. Additionally, if the air suspension in the tires leaks, it could also be a cause, though not as deafening. If you hear this kind of noise, don’t ignore it—pull over immediately and get it checked at a repair shop with proper tools. Delaying could lead to exhaust gases leaking into the cabin or brake failure, which is a huge risk. Remember, regular maintenance of exhaust components is key to preventing rust issues—don’t skimp on this small expense.
