n16 almera dci strange noise?!

Hi all i thought it was me but there seem's to be a strange noise from the drive belt area on my 2.2dci. To start with the only way to describe it is like intermitant noise like a cd loading in as it's put in a cd player before any one ask's no it's not that lol some one suggested a bearing in alternater etc almost as if something is building up pressure?tonight it sounded louder and starting to worry me now! The air con idler pulley has alway's been noisey not sure it's that need help please !
 
I have a similar issue. Spray the aircon idler with some lube (GT85 ect) and see if it stops the noise.
 
It's really odd i hope it's just that i have noticed around the power steering pump is damp too
iv'e got some white grease say's suitable for bearing's i'll go back outside in a minute an give it a go ........
 
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