Help: Sqweaking noise from 1Z, with filmclip!

[AudiRS]

I`ve got this squeaking-noise from the enginebay at my `93 Audi 80 1,9TDI 1Z.
Sounds a bit like bird-twittering...
The sound only appears when the engine is cold, but goes away when it is stars getting warm.
When I step on the gas the engine stop making the noise, but re-returns when i let go.

The sounds seems to be comming from the front of the engine, but it is`nt very easy to find out where it comes from!
De-attached the belt for the vanepump/waterpumpe and started the engine, and the noise was still there. This concludes that the noise is`nt comming from any of theese.

I spottet a kind of belt-tensioner for the dynamo-belt, but did`nt quiet get how to de-attach the belt?
This stopped me of taking of the dynamo-belt so i could`nt test if the noise came from here.
Can someone explain to me how this belt-tensioner work? Is it fluid-based (I think this because the noise disappear when the engine is getting warm)?
How do i loosen the belt, so i can take it of?

Anyone who have heard about a similar problem on the 1Z-engine?
What can the problem be?

Heres a filmclip of the sound:

http://s216.photobucket.com/albums/cc94/husebyrs/80%20TDI/?action=view&current=video-2012-06-10-13-22-25.mp4

[MGaz]

sure i've heard something a little like this on mine before ?

[goodall]

Could of swore I had already replied to this, but my 1.9tdi A4 had the same noise, turned out to be the alternator sizing, worth checking along with the water pump and power steering

[JMLAudi]

Noise

On the A4 ,1.9TDI the alternator has a clutch type unit on the alternator pully..........on your Audi, i think your belt tensioner for alternator is worn on its shaft on the big alumium bracket

my 2cents
john

[Max M4X WW]

i think your belt tensioner for alternator is worn on its shaft on the big alumium bracket

How can this be fixed?

[shaun5]

To eliminate the belts, spray some penetrating fluid on them and see if the noise goes.
As said above could be the something seizing.

[audinut]

i have the same fault on mine

[turboaudis4]

my 1z made this noise & the timing belt was riding to the front of the tensioner new belt idler tensioner noise gone dave

[ross b]

Got a feeling this is the same noise mine is making, aux roller tensioner/ aux tensioner bracket. Im unabe to hear the sound clip any chance it could be uploaded again? Mine makes a chirping noise from cold, not always, and seems to have a rattly noise low down in the revs when the engine's vibrating the most upwards of 1500rpm seems fine. I noticed the chirping/squeaking noise come out of nowhere when i put jum leads onto a friends car recently, making me think aux related?