My Equinox is letting out a whining noise while in idle and as you accelerate the noise just gets louder. From the research I have done it sounds like a bearing somewhere on the serpentine belt.

I put a screwdriver from ear to the alternator and it sounded like it was coming from there but I have a feeling that a bad idler pulley bearing could also cause the vibration to run up to the alternator and throw a little trickery at me. I didn't feel safe putting the screwdriver on any of the pulleys.

What is the best way of determining if it is coming from the alternator or one of the pulleys or water pump?

Any Ideas

 

pop the belt off and spin the pulleys by hand you can usually hear a slight growl or sometimes feel play if you try to rock the pulley

 

i have a 2007 chevy equinox and i hearing a whining light roar noise but it only when i driving not when sitting steal in any shift, got transmission fluids checked oil checked what could this be??

 

Maybe power steering pump try Turing the wheel while parked back and forth and in drive see if the noise alters as u turn smell the fluid if it's bad it will smell burnt