New whirring noise, any ideas

[CJ_Derv]

Hey peeps

Just wondering if anyone can help, ive got like a whirring/grind noise at idle now and increases with slight revs not too noticable at high revs, now turbos fine, jusst wondering if it could be the pump or tensioner, or main pulled,powersteering or altenator, just wondering if anyone had similar problem and can help

Think this may be related to previous screetch at mid revs under full load, which havebt isolated yet

Any help would be great

Thanks