Re: 2000 expo eb loud whisling noise.
Those tubes should not be hard to replace, if he is talking about the hoses that go under the Idle Air Control module. The module is located at the very back of the intake manifold, behind the throttle body and almost tucked under the firewall. Not too hard to get to, though, if you stand on the bumper and lean accross the engine. I think they are standard rubber hoses, but I'm not certain. I just replaced the Idle air control valve on my truck. I did not pay much attention to the hoses, but I did glance at them.