I was on the highway today and I noticed my car making an unusual sound. It is making a loud humming sound, almost like a low pitched whistle. It went away once my speed decreased but when I took back above 45mph the sound came back. It seems to get louder the faster I go and more quite when my speed decreases until it disappears. I wish I could explain the sound better but its hard to type the actual sound.
The engine is running fine and nothing else is wrong right now (except my damn blower motor resistor). Anyone else ever have this or hear of it? Its a first for me.
Please Advise