I have intermittent squealing at startup, hard acceleration, and it can slightly change when turning the wheel to one extreme or another. It's coming from the left side of the motor, but I can't figure out which one it is...

Whats the best process to determine which one is screaming? It's driving me nuts...

 

Stethoscope or even pull the belt off and feel for any notchy ness

 

Stethoscope.

It's odd that it squeals when you turn the wheel. That makes me think power steering but that's on the right side.