C280 W202 whining noise

[PBF]

Hi, i am looking for some advice,when i first start my car up there is a whining noise coming from the front of the car,it
quietens down a little when warmer.
I have changed the ina Deflection Pulley Drive Belt Tensioner also the drive belt with a ContiTech Drive Belt
,but alas this had made no difference, any idea what i should change or test next.

Hi I've taken a short video of the whining noise any help would be appreciated. Here's the link:

MVI 2206 - YouTube http://youtu.be/GSxOvmKg9Xk


Thanks Paul

[vaspen]

easy way of telling if its a pully going bad
take a long screwdriver (like this one http://www.toolplanet.com/product/Tekton-20-Long-Screwdriver-2773?vfsku=MIT2773&gpla=pla&gclid=CPudnryl5r0CFeRlOgodIWoA-g )
and hold it to the pully (non-moving area ) and hold the handle twards your ear
you WILL notice a difference in sounds coming from the pullys it will help you find what one is squealing if that's the issue (vid wont play for me )
frankly anything long that is metal and has a handle will work
hope this helps

[PBF]

Thanks for the replies.
I have taken the drive /fan belt off the car as suggested and started the car up
but this has made no difference to the whining noise,
any information would be appreciated.

Thanks Paul

[vaspen]

vid finally loaded that doesn't sound to be a pulley maby a vacuum leak ? metal expands when hot and retracts when cold
you said it goes away when warmed up right ?
this will help in how to do this prosess http://www.youtube.com/watch?v=9CPqbaSgcok
see if this will make a difference