Why does my car make noise when I Turn on the AC?
Anytime your car makes a noise that wasn’t there before could be a sign of trouble. Air conditioning systems are relatively quiet when in use. When you turn on your air conditioning and hear rattling, banging, or other unusual sounds, it’s normal to feel a bit nervous about what is causing the issue.
Why does my car air conditioner not turn on?
Pieces of debris and mud can hinder airflow under the hood of the car, which will prevent your AC from working. If you see anything that could be restricting air flow, get it out of there and try the AC again. With the car turned off, open your hood and take a look at your AC system. The air conditioner compressor itself will have a belt around it.
How can I tell if my car has a problem with the AC?
Start with the fan speed turned to its highest setting. If your car has a “Max AC” setting, select that option. Listen for unusual noises coming from the AC. Noise could indicate that there is a problem with your compressor and that it needs repair or replacing. Feel the air coming out of the vents.
Why does my car AC hissing when I turn it off?
If you hear the AC hissing after you turn your car off, that’s actually just your car’s way of equalizing pressure. See, there’s both a high pressure side and a low pressure side in your system when the AC is running. A refrigerant like Freon moves between these two separate sides which are divided by either an expansion valve or an orifice tube.
What happens if your car a / C is not working?
But A/C is more than just comfort; it’s a safety issue too. In fact, one of the most dangerous places for someone to be during a heat wave is inside of their car without A/C since temperatures can spike to dangerous levels. So if your vehicle’s A/C is only kicking out hot air, you should take steps immediately to get the problem fixed.
Pieces of debris and mud can hinder airflow under the hood of the car, which will prevent your AC from working. If you see anything that could be restricting air flow, get it out of there and try the AC again. With the car turned off, open your hood and take a look at your AC system. The air conditioner compressor itself will have a belt around it.
Why does my car AC make a hissing noise when I turn it off?
AC Hissing When the Car Shuts Off A hissing noise is another common sound drivers hear from their car’s air conditioner. The good news is this doesn’t always spell trouble. If you hear the AC hissing after you turn your car off, that’s actually just your car’s way of equalizing pressure.
How can I tell if my air conditioner is working in my car?
Collecting Initial Information Turn the air conditioning on while the car is running. Listen for unusual noises coming from the AC. Feel the air coming out of the vents. Notice the air pressure. Smell the air coming from the vents. Inspect your car’s fuses.