MK5 Golf GTI

All Things Mk5 => Mk5 General Area => Topic started by: sgour on October 21, 2012, 11:14:47 am

Title: noisy rattle when running - diagnosis?
Post by: sgour on October 21, 2012, 11:14:47 am

Hey,

Last night when starting up the GTI on my way home, there was a bit of a rattling noise. Here is a video of it which I took this morning -

The rattling seems louder when I give some more throttle, but it wasn't dead and power wise engine seemed to be as normal... usual performance etc..


Now, I believe its something to do with the alternator tensioner/pulley; and obviously the alternator belt since there is a slight split in it from where it seems to be getting extra wear at a point about 2mm from the edge.


But on my searches here I see people reporting a similar noise with timing belt tensioners, timing belt issues etc.. I had the timing belt/waterpump all replaced a few hundred miles ago (can you tell I always seem to expect the worst!!) . Please try to reassure me?  :laugh:

Title: Re: noisy rattle when running - diagnosis?
Post by: TrickGTI on October 21, 2012, 11:30:38 am

would be unlikely to be a faulty cambelt kit but never say never. sounds very much like a timeing chain rattle to me??

Title: Re: noisy rattle when running - diagnosis?
Post by: sgour on October 21, 2012, 12:29:52 pm

Quote from: TrickGTI on October 21, 2012, 11:30:38 am

would be unlikely to be a faulty cambelt kit but never say never. sounds very much like a timeing chain rattle to me??

Thanks for the reply. Here is a video and 2 images I took -

(https://pbs.twimg.com/media/A5uY3WECIAAz8Gy.jpg:large)

(https://pbs.twimg.com/media/A5uY0PwCIAAyBFg.jpg:large)

Title: Re: noisy rattle when running - diagnosis?
Post by: Neiltdi on October 21, 2012, 12:43:10 pm

For a. Start you need a new belt and the tensioner is supposed to move like that

Title: Re: noisy rattle when running - diagnosis?
Post by: TrickGTI on October 21, 2012, 12:49:28 pm

Listening to that i wouldn't drive it anywhere incase of damaging it to much but id suggest getting it towed to a garage to be looked at it sounds like a pulley is loose.