Over the past few weeks I've been hearing a little noise coming from the fans for the climate control. You can only really hear it when the fans are on low and it's not very loud, but is annoying. Its a whining and sort of rattling sound. It seems to follow the revs of the engine - if I rev the noise gets louder and when the revs drop, so does the noise. If the climate control is turned off, the noise disappears.
Does anyone have any idea what this might be? If so, what needs to be fixed?
Hope someone can help me with this, as it's starting to annoy me.
Thanks