Aux Belt Chattering When Cold.

[chromedome]

I have had the alternator pulley replaced to try and stop the aux belt chattering when cold. The garage I use, good guy, said it may be the bottom pulley giving the problem. Is the bottom pulley a clutch type or do I have problems else where. Thanks for any replies.

[victor meldrew]

Check the plastic idler on the tensioner, mine was wrecked by the time I changed the alternator pulley.

While your there check the water pump pulley runs true

I know it's a separate belt but they can screech and chatter before any signs of leakage

Edited September 1, 2012 by victor meldrew

[chrispb123456]

As said more likely plastic wheel is egg shaped, unlikely anything wrong with crank pulley.

[chromedome]

^{Sorry to be thick but can someone post a picture of it and do I have to change the whole tensioner.}

[chrispb123456]

Its usual to change complete tensioner.

http://www.ebay.co.uk/itm/Auxiliary-Belt-Tensioner-Seat-Alhambra-Leon-Toledo-1-9-TDi-Dayco-/370545055459?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item564634d6e3#ht_2310wt_1163

[gregers]

check this thread out,

 

http://www.fordgalaxy.org.uk/ford/index.php?/topic/11428-alternator-workshop-error-noisy-at-idle/page__st__45

 

on page 4 adrianf mentions using either a 17 or 19mm spanner to release the tension on the unit,i knew these intructions were around as i followed them when i done mine.

within the thread it will tell you the method on how to change the tensioner.

 

when i done mine i bought the pully from gsf and the tensioner from vw as it was cheaper but that was for my old mk2 tdi.

[chromedome]

Thanks for the replies. Can't even see it so another job for the garage.

[chrispb123456]

Hope this is clear enough for you :(