I posted a question earier, but maybe it was not clear. My car makes this growling noise under the hood, but really only can hear it when I am not moving. When I accelerate, the noise cant really be heard at all, but when I stop, I can hear this growling noise. When I put the car is park (it is an autmoatic), and press on the gas, I can really hear it! But as soon as I put it in drive it seems to go away. Any suggestions? Thanks in advance!