Your description of the problem sounds a little vague, but it sounds like you are describing a vacuum hose leak someplace behind the dashboard. Probably something to do with the climate control system, like a blend door activator.
making a hissing noise
Madagascan hissing cockroaches make a noise by forcing air out of a special hole.
when you breath is air and force it out with your tongue it makes the hissing noise
The hissing sound when opening a can of soda is caused by the release of pressurized carbon dioxide gas. The pressure inside the can is higher than the surrounding air, so when you open it, the gas rushes out, creating the hissing noise.
A hole in the chest ... the hissing comes from the leaking air.
A hissing noise
The hissing sound after flushing your toilet may be caused by a faulty fill valve or a leak in the tank. This can lead to water continuously running into the bowl, causing the hissing noise. It is important to address this issue promptly to prevent water waste and potential damage to your toilet.
Yes, "fizz" is an example of onomatopoeia because it imitates the sound of a carbonated beverage releasing bubbles and making a hissing or sizzling noise.
Yes. They make grunting-hissing noises.
Possums make a variety of hissing and snorting noises.
Sibilant means making a hissing noise, particularly related to speech (e.g. making the noises of 's', 'sh', 'z'). Therefore sibilance means the quality or state of being sibilant.
Well there are lots of possible reasons, BUT Li key it is a vacuum leak, either the hose of Brake booster, and or intake is / has a leaking vacuum line.