Cracked Fly Wheel
I wish I knew. My car makes the same noise after its sitting after being driven.
Most likely it is a belt on your car. Usually the squeeling is from a loose belt while idling and will also make noises while driving.
Clutch throw out bearing bad.
In order to tell you that you would have to describe the noise and what the car is doing when the noise is made. Are you idling, driving, just turned the AC on? What is occurring and what is the noise? Idling and sounds worse when AC is on. Sounds like it is coming from the top of the engine. Vehicle has 120k miles
You can use a car noise database to compare noises at mycarmakesnoise.com
A bad bearing in the water pump could be one possibility.
Vroom Vroom
Check under your car... you may have lost a muffler.
it does this because it just does
engine
chiken