Good advice Stan
. Very rare to be anything in he cambelt side but could be from the water pump as I've had this before where the bearings have collapsed and the pully on the wp has moved inwards grating against the casing
. Fortunately I found it before the pump jammed as it would have snapped the cam belt.
You can eliminate the power steering pump if it doesn't get louder when you turn the wheel when the car is stationery with the engine running. As Stan said if you remove the aux belt and the noise is gone individually spin all the pulleys and pumps. He one that makes a horrible whiring noise or is difficult to turn is the culprit.
Have had a few tensioner pulleys fail.
I also have a vertually brand new idler pulley sat at work if it turns out you need one (genuine pug) I replaced mine just before I went supercharged which made it redundant.
Black power baby! SUUUUUPERCHARGED
Seat Leon FR TDI 190BHP 300lbft daily gti-6 killer :p
12x 306's owned so far
Cambelts, clutches, service work carried out on All makes and models, Peugeot Citroen / mitsubishi specialist.
Pug planet / Citroen Lexia diagnostics / code reads available.