If your car has a turbo charger it is probably the turbo charger.
A whistling noise indicates a vacuum leak.
Brake booster problem?
A chirping whistling noise!
A bad compressor belt can cause a whistling noise while running the air conditioner. A bad engine can also cause this noise.
whistling noise from engine will be caused by a leaky gasket,sucking air. this is usually the intake manifold gasket
dog whistling
Vuvuzela and police whistling noise of loudspeakers and people
The most common cause of the whistling in a 2003 Impala is a vacuum leak. Any of the lines under the hood could be causing the noise.
Perhaps a vacuum leak?
A whistling noise in your toilet may be caused by a faulty fill valve or a worn-out flapper. This can lead to water leaking and causing the noise. It is important to fix this issue to prevent water wastage and potential damage to your toilet.
whistling loud noise
Cracked Fly Wheel