I should have been more clear (it was late last night).
I am chasing a vacuum leak somewhere in my car. I know that vacuum leaks affect idle so I bought an idle control valve and installed it. It helped with the idle but it still isn't perfect.
Now I also am trying to diagnose a loud whining sound coming from the intake manifold. It will only happen once the engine has gotten up to temp and I was asking what else it could be considering that I replaced the water pump. I also wasn't sure if vacuum leaks could make such a noise.
And the last picture I was asking what that intake tube was and why is it necessary.