haven't had the aux done yet. had another listen, it sounds like it is coming from the front, it's a grainy sort of whistle. doesn't sound healthy like. doesn't feel like it is pulling as hard but i'm not sure if that is me over analysing things! what do you suggest? get it in to renault?
Aux belt should be done every 3 years or 36,000 miles. You have gone past the 3 years and are close to 36k so it needs to be done.
If its the aux belt pulley going which it could be if its a grainy noise the aux belt might come off and 99% of the time it will take the cambelt out with it which is going to cost a small fortune.
Its also worth poiunting out that the Cambelt will need to be done early next year at the latest as Renualt recomend doing them every 5 years although quite a few on here would do it every 4. So it might be worth while getting both done while your at it seeing as the aux belt has to come off to do the cambelt.
I would take it to a specialist seeing as its out of warrenty and see what they diagnose it as.
EDIT: Might be worth posting in the engines section as you might get more answers to confirm or disagree with mine....