After shutting off the engine, something whines loudly.
The noise is louder inside the car, and seems to be coming from behind the firewall, which leads me to think the blower fan is stuck, or something with the A/C system. The noise seems to be coming from the passenger side.
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Is the whining noise coming from the engine compartment where the compressor is located or is the noise coming from inside the car? If the noise if coming from inside the car it could be your blower. When a blower wears down the bushing is the first thing to wear down and it begins to have play. That makes the blower/fan vibrate making a loud whining noise. Replacing the blower could solve that whining noise.
If the noise if coming from the AC compressor, it also could be a bad bearing within the compressor.
The whining noise you hear coming from the power steering pump is one of three things. The first is more of a loud "hush" than a whine; this is the sound of fluid rushing through the bypass valve when you turn the wheel all the way to one side or the other. Sometimes the bypass valve malfunctions or doesn't open all the way, causing pressure to back up in the pump and cause your engine rpm to drop. The second and third causes result from cavitation -- vacuum pockets created behind the rotor's vane blades as a result of extremely high pump action -- or air in the lines.
two things it would be 1 your battery could be bad even if it is not dead and will start your car it could have a bad cell the other thing could be the belt is loose and not letting the alternator spin fast to charge the battery so it slips on the belt but thats what the noise is the belt check the battery at autozone for free and if thats not it its the belt