whirring noise on cold startup

1. Psycho18 Established Member Joined: Apr 2008 west Mids Posts: 1775 Mk1 White VTS

   #1 21st September 2011, 19:39

   i get a whirring noise when i rev the engine on a cold startup. The colder the weather the worse and louder the whirring. Once i've set off and got to the bottom of the road it stops. I think it is coming from around the alternator area.
   What's the score? Alternator shafted?
2. ChAdS Established Member Joined: Feb 2011 Posts: 1385

   #2 21st September 2011, 19:47

   Is your belt tight? Has the adjuster slipped? If the alternator was fucked it would struggle to start or not start at all, or while driving your battery light would flash.
3. Psycho18 Established Member Joined: Apr 2008 west Mids Posts: 1775 Mk1 White VTS

   #3 21st September 2011, 19:58

   will have a look.
   
   Na everything starts first time without a problem. I was think the bearings in the alternator might be shite.
4. user_46038 Frequent Poster Joined: Jul 2010 Worcestershire Posts: 572 206 RC 180

   #4 21st September 2011, 20:07

   your alternator belt may be getting brittle and stiff causing the whirring noise, once you get to the end of the road its warmed up and become more supple so the noise stops