02 4.6is weird hissing noise w/video
 

I don't really hear anything out of the ordinary. Actually when you came out from under the car it sounded quiet and perfectly normal.

also, you wouldn't be able to hear the torque converter with the car sitting still as it only operates when the vehicle is in gear and in motion.

It's the hissing noise, what could it be?

A running engine. It sounds normal.

Obviously, this is not the first time you have listened to the engine running so you know it is not normal.

But, it is hard to hear from the video what you hear. Can you do another for longer period of time and moving around slowly even under the hood so we can get a better idea of what is going one?

Anything else going on? Idles fine, revs normally etc?

He said this has been going on since he purchased the car, so safe to assume he's never heard it run any other way. Which is why I said I think it sounds perfectly normal. You're going to have noise under any car when it's running, I don't hear anything out of the ordinary in his video.

yea, the noise is only apparent when in park, if I put it in neutral it goes away but the engine idles ok except in the morning when I arrive at school and have it idle for about 3-5 minutes it feels like someone is grabbing the car and rocking it side to side a bit.

The rough idle, is that only when the engine is cold?

I definitley do hear the hissing hes talking about in the video.

But for us to help you more can u=you make a video of inside the engine bay,moveing the camera slowly across and up and down into the bay