Originally Posted by 
matti4556
				
			 
			Dullbird - FWIW I had a loud intermittent "clicking" noise like you describe (300Tdi) and be buggered that it disappeared after a new tensioner and belt was fitted. There is no way in the world I would have believed a serpentine belt could make that noise but it seemed to be from the backside of the belt "rubbing" on a slight angle across the tensioner pulley.
Now when I fit a new belt the thing runs really quiet until I do one of the following;
1. Degrease the engine bay. (It seems a really dirty belt runs quiet)
2. Drive up Teewah beach in fluffy sand. (The sand strips the back of the belt and it gets hard and shinny, as does the tensioner wheel, and the only way to get it quiet again is to "roughen" or "deglaze" the tensioner wheel surface or fit a new belt - both ideas do not last long, neither does a spray of belt dressing)
I was surprised one day after a trip through the bog at Glasshouse that everytihng was really quiet with a good coating of mud and slop.
So it seems to me the squealling belt is not a LR fault - the car is actually "crying" out for you to take it out for a play in the muck where it seems happiest. :)