Help Diagnose Sound Please!

[danggilmore]

Hi all!

I've got a 2008 with 137k on her.

I've been experiencing a high pitched electrical sounding sound that directly relates to when I push the gas pedal to accelerate. When I let go, the sound lets off but decelerates with the car if that makes sense.

I can't make the sound occur with the car in neutral or park so its really hard to pinpoint. I tried listening inside my alternator and i can hear a similar electrical noise but very quiet. I'm not too sure what an alternator is supposed to sound like.

It's not a super alarming sound. It sounds like a supercharged engine! Runs and drives wonderfully as always.

I looked under the hood and noticed coolant leak from my water pump. I was all excited and thought I found the cure to the noise. After new water pump installation today, the noise continued. :[

Is it my alternator? Is it possible its the fan?

Any input and help would be greatly appreciated! Thanks!