I've got some chatter on cold start, it's either the aux belt or the water pump pulley, the noise goes away with a bit of lube sprayed on the pulley but could be getting on the belt too, the noise also goes once the cars warmed up a bit. Just need someone who knows what they're doing to take a look.
This is the noise btw
http://youtu.be/9LsYyNe8IVsJohn.