Originally Posted by VALKRYDERGUY
I hear a sound that sounds like an electric motor too but it occasionally comes on for 3 to 5 seconds even when the car has been running. The sound comes from under the hood and it seems to be closer to the passenger side front of the car.
Does anyone know what this sound is coming from??
That's your secondary air injection pump (it's an emissions part). It only kicks in on cold starts to keep the emissions down.