the belt is probably loose. try tightening up the belt or replacing it.
noise
when you breath is air and force it out with your tongue it makes the hissing noise
Madagascan hissing cockroaches make a noise by forcing air out of a special hole.
The climate control popping noise in the air heater box under the dash that is causing the vehicle to be unable to switch from heat to air is a stuck valve. This value can be opened manually by removing the lower dash cover and reaching behind the glove box.
because that air conditioner is full of air. It is letting the air out.
They could be sniffing in the air to make a noise
In take of air its common
Your central air conditioner may make a loud noise when it comes on. This is because it may have a leak somewhere in the system.
Actually it is air being released into the joints.
The noise you hear is the air that is being pushed when the insect flap its wings.
What you are hearing is the clutch on the air conditioning pump engaging... the alternator doesn't make any noise unless the bearings are going bad and then a grinding noise will be heard.
it is the sound of the air rushing past that makes the noise it is worse if they are flat