2dvh

So there's this noise in my car that I've been trying to figure out what the hell it is for what seems to be the longest time.

It sound like a really angry bird is under my hood/car.

It only makes this noise when the car has been sitting out for enough time to cool down a bit. And it only makes it when the car is actually moving, if I rev it up while parked it doesnt do it. The noise gets higher in pitch as the car picks up speed/rpms rise up, until the noise disappears or I stop.

I tried to get the noise as best as I could in this clip:
https://soundcloud.com/2dvh/noise

I'm pretty sure it's something from the drive train and not a pulley at this point, as I've replaced 2 pulleys with bad bearing and it still makes the noise.

JC316

Have you checked the brake pads? It sounds like it's down to the warning on them.

2dvh

Can't be my brake pads, I replaced them like 3000 miles ago.

The noise also doesn't come back after it goes away, the only way it comes back is if I let the car cool down for a while.

I was going to guess maybe the u-joint of the driveshaft but I'm not sure about it.

JC316

All 4 wheels? What about the rotors. Highly doubtful that it's a U joint. What about the clutch, how old is it?

2dvh

Replaced all 4 pads.
Rotors haven't been replaced. I'll have to check how they are.

And the tranny is auto,so the clutch is out of the question.

2dvh

By 4 pads,I mean the ones in the rear. I need to check the ones on the front.

2dvh

I mean it the other way around.
The ones in the front are new, the ones in the back haven't been replaced yet.

The thing is, from what I can tell, the sound is coming from the front of the car.

2dvh

Made a new video where you can appreciate the sound a little bit better:

JC316

Ok, thats definitely not the brakes. I've heard something similar when a brake shield is rubbing against the rotor. You need to jack it up and rotate each wheel separately and see if it's something there.

Thatsweetstang

I would check if the backing plate is hitting the rotors, then check the pads, meaning take off the pads and look at the pad material to see if any rocks are in there. Then check the rotors for obvious grooving or weird marks on them. Also while you got the car in the air check the front hub bearings for looseness. One last thing is when your driving turn right and left like your weaving in and out of traffic, you'll be loading and unloading one side at a time to see if the noise is coming from the left or right side. I can only listen to the first audio but to me it sounds like the brakes.