intermittant screeching noise 1998 20v T

[SpNight]

I have noticed this morning that my car has started making a screeching sound coming from the engine bay somewhere. It is intermittant, and carries on for about 5 - 10 seconds after I have switched the engine off. It seems to happen as I am slowing down until the point where I am stopped at a junction / set of traffic lights and then after 5-10 seconds it stops again. When I start off again it starts untill im up to about 20mph then stops again.

I get the common screeching from the starter motor on start up every now and then but this is a different noise to that.

Ive just read a couple of posts mentioning ac compressor?? But would this noise carry on after engine is switched off like mine is doing?

Had a full service about 2000 miles ago, all VAG filters and fully synthetic oil used.

The auxillary belt is showing signs of wear and it is due a cambelt change in about 5000 miles.

it has 120k on the clock.

Just need to know if its ok to drive really?

Thanks,

[richw911]

Rad fan? Could be stuck on with faulty switch and be slighty seized 

[SpNight]

ive tried driving with the clima control switched off completely and the noises stop, when I switch it back on the noises start. Does this help for someone to possibly diagnose what it will be?

[harlemex]

yup. air ac belt 

[topher]

as rich says, rad fan bearings most likely.. can't think what else might keep spinning after the engine is turned off.

[Dalo Harkin]

SAI possibly, mine made a horrible noise and I removed it 

[SpNight]

Thanks everyone. Whats the SAI??