A whistling noise indicates a vacuum leak.
A whistling noise in your Pontiac Grand Am after an oil change could be due to several factors. It might indicate a vacuum leak in the intake system or a loose hose that was disturbed during the service. Additionally, if the oil filter was not properly installed, it could cause oil pressure issues, leading to unusual sounds. It's best to have a mechanic inspect the vehicle to identify the exact cause.
A bad compressor belt can cause a whistling noise while running the air conditioner. A bad engine can also cause this noise.
One of the hookers in the trunk, mabie. Or your past-out drunk buddy.
possibly on of the belt pulleys or a vaccum leak
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.
check the fluid in the power steering pump
The head gasket is about to blow.....Typical ford..
It is probably the cover for your catalytic converter.
Replace the Harmonic balancer
A chirping whistling noise!
Some times the impeller blades get bent into the housing causing noise
newdiv vacuum leak, cat. converter comming apart, exhaust noise