Important! : rough whirring sound?

1. tomo1989 L-plater Joined: Sep 2010 West Yorkshire Posts: 91 Wicked Red Vts

   #1 30th April 2012, 14:02

   Hi,
   
   when i start car ie. in the morning when its not been run it sounds very whirry and rough but once run for 5 mins its fine and is like a normal engine again but just wondered what it could be
   
   Thanks
   
   
2. user_18250 Established Member Joined: Sep 2007 Swadlincote Posts: 1185 2003 Black VTR

   #2 1st May 2012, 18:59

   Aux/alternator belt, PAS pump or cam belt most likely, possibly thrust bearing but unlikely to go away when warm