Not sure if you can tell from the video but I have a noise that sounds like my belts slipping when I step on the gas. But its coming from the rear of the motor and only last about a minute after take off. Would it have to do with the TP sounds about that area but why would it go away after driving 1 minute. phone quality video sorry.
http://youtu.be/RqYIn5_wjp4

 

Hi guys.

As I didn't want to open a new thread about noises, and after reading about 15 posts related to noises, I decided to write my problem inside this thread.

Until last week I had a bad wheel bearing on the front-right that was making my car sound like a jet after 30 miles/h and I changed it. The rear bearings have been changed 2 months ago on both wheels.

Last week, when the front bearing was changed, the ABS sensor was pushed inside too much and it was crushed when reassembling everything back, so this might be the cause of the noise, because I am still waiting for the new ABS sensor.

I can hear the noise even if the clutch is in idle position, while going over 30 miles/h, but I can't hear it when the car is idling, no matter how much I push the gas pedal. It's the same noise when I turn the wheel and when I go on a straight road.

I added 2 videos, maybe someone can guess my problem:

http://www.youtube.com/watch?v=QBJKTNLpHkk - noise starts after second 12

http://www.youtube.com/watch?v=9HJkqDj-J1c - noise starts after second 12 and after second 17 is quite loud

Please help me because it's killing my brains

 

Sounds like the Turbo is gone. Or the Water Pump.

 

I don't have a turbo but the water pump might be the one.
But this sound is the same if I let the car idle while moving. I have a manual transmission, so I can put the car in neutral (no gear active) while moving and the car will still move. I think that the water pump is controlled by the timing belt so the belt's speed decreases as the RPM decrease, and when the car is in neutral, while moving, the water pump's speed should decrease also but you can hear that the sound in my video is the same no matter the engine's speed.
Sorry for my english

 

How about the Timing Chain Tensioner. They Make a similar noise.

 

sounds like it could be the secondary air pump.

 

@crazyone the power of the sound increases along with the speed and not along with the RPM of the engine. If I am not mistaking all these belts and tensioners have their speed adjusted according to the RPM of the engine and not the speed of the wheels. Am I right? If I am right it means that my problem is somewhere around the drivetrain. Thanks for your help.

 

The Video I saw On youtube, The Car was not moving.

 

You didn't see the car moving because I was making the video using my phone, so I was holding the steering wheel with the left hand and the phone and clutch with the right hand.
I am starting to think that it might be the tires.

 

Oh, I guess I only saw the First Video, with the hood open.

The other Videos, don't tell me much. Bearings are the only thing that could make a deep sound. Unless you have a loud muffler.