crossed wires, a short, exposed wiring.
Another possibility is shoddy wiring. My 2008 GTS came with a 10" subwoofer set-up with a shoddy factory install that had power and ground cables for the amplifier routed on the same side of the vehicle which can cause this hissing sound. I rewired it myself instead of waiting for a Mitsu dealer to do it for me, and the hiss went away.
Exhaust leak? Vacuum leak?
coz ur momma is in ur bonnet!
maybe clogged air filter or carburettar is sucking air and needs repairing
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.
A ferret that make a hissing sound means they are annoyed or irritated
Might want to check the catalatic converter. if it is that, it's gonna be spendy unless you just drill a hole in the pipe.
Examples of electrical sound include buzzing from a faulty switch, humming from a fluorescent light, crackling from a loose power connection, or hissing from a malfunctioning speaker.
A harsh "s" sound is called a sibilant sound. Sibilants are a group of hissing sounds produced by forcing air through a constricted opening, causing friction.
To make a humming or hissing sound, like an arrow or ball flying through the air; to fly or move swiftly with a sharp hissing or whistling sound., A hissing and humming sound.
When a microphone is placed near a sound speaker, it can pick up the sound output from the speaker, causing feedback loop. The sound that comes out of the speaker is captured by the microphone, sent back through the system and played through the speaker again, resulting in a continuous loop of sound amplification, which leads to the noise you hear.
Geese make a hissing sound.
A cracked air cylinder could cause a hissing sound in a shock absorber during rebound. Another possible cause could be the seal.