Pulley Rumble

[ronk]

I've got a rumble at tickover from the front of my 3.0 ltr (34k miles) The noise is a bad/rough bearing on one of the engine pulleys.
Its not that bad at the moment and because of that, the dealer is in "Wait and see mode"
I'm sure its not a major component ie Alternator/Air con pump / water pump so I assume it must be an idler / tension pulley maybe?

Any thoughts!

 

[un1eash]

If its making a noise then something isnt right. I wouldnt want to wait and see what damage a pully/bearing would make when it lets go at 7k rpm.