A8 Parts Forum  

Go Back   A8 Parts Forum > A8 D2 > D2 - Common Faults

D2 - Common Faults Quick links to all known common faults and their solutions

Reply
 
Thread Tools Display Modes
  #11  
Old 1st November 2021, 06:23 PM
Ronin's Avatar
Ronin Ronin is offline
Senior Member
 
Join Date: Jul 2019
Location: Wales
Posts: 439
Default

Yup! Too much coffee and not enough sleep 😜
__________________
2002 Audi A8 2.8 Sport Quattro
Reply With Quote
  #12  
Old 5th November 2021, 04:04 PM
strummagnet strummagnet is offline
Senior Member
 
Join Date: Jul 2011
Location: Gosport
Posts: 177
Default

So,

Little update.

The Yuasa battery after 3 days on trickle charge is no longer holding anything above 11.2V. Odd as the little indicator is still showing green as in "OK".

New battery on (Varta as the link MJ supplied) cranked over and fired up no issues whatsoever. Checked alternator output........ None. Now I remember when backing the car down the drive there was a rattle from under the bonnet for a few seconds, then went away. I thought maybe the cats have blown on the offside but now thinking maybe the alternator has given up??

Pulley belt is fine and the pulley spins on the alternator but no output.

Will check on this later as I have to pull the suspension on this side so might as well take the alternator out for further investigation.

Many thanks for the suggestions.
__________________
Paul
Gosport UK
________________________
Audi A8 2002 2.8 Quattro Sport.
Daily Driver: BMW 530E M Sport.
Reply With Quote
  #13  
Old 5th November 2021, 04:50 PM
MikkiJayne MikkiJayne is offline
Senior Member
 
Join Date: Jan 2012
Location: Devon
Posts: 4,243
Default

Is there any inertia if you spin the pulley by hand? If the pulley is fine then its likely the regulator has given up.
Reply With Quote
  #14  
Old 5th November 2021, 10:47 PM
Ronin's Avatar
Ronin Ronin is offline
Senior Member
 
Join Date: Jul 2019
Location: Wales
Posts: 439
Default

My alternator failed by pulley free wheeling both ways.

I have a spare refurbuished alternator with brand new bearings, valeo clutch, new regulator and slip rings if you need one
__________________
2002 Audi A8 2.8 Sport Quattro
Reply With Quote
  #15  
Old 6th November 2021, 09:01 AM
strummagnet strummagnet is offline
Senior Member
 
Join Date: Jul 2011
Location: Gosport
Posts: 177
Default

Quote:
Originally Posted by Ronin View Post
My alternator failed by pulley free wheeling both ways.

I have a spare refurbuished alternator with brand new bearings, valeo clutch, new regulator and slip rings if you need one
I'm not tackling it this weekend but once I know and if you still have it I may take you up on the offer
__________________
Paul
Gosport UK
________________________
Audi A8 2002 2.8 Quattro Sport.
Daily Driver: BMW 530E M Sport.
Reply With Quote
  #16  
Old 6th November 2021, 10:09 AM
Ronin's Avatar
Ronin Ronin is offline
Senior Member
 
Join Date: Jul 2019
Location: Wales
Posts: 439
Default

Quote:
Originally Posted by strummagnet View Post
I'm not tackling it this weekend but once I know and if you still have it I may take you up on the offer
Yeah I keep it in the boot as a spare, I'm just too paranoid I should probably buy a spare fuel pump and a gear box as well and keep it in there
__________________
2002 Audi A8 2.8 Sport Quattro

Last edited by Ronin; 6th November 2021 at 10:15 AM.
Reply With Quote
  #17  
Old Today, 11:19 AM
strummagnet strummagnet is offline
Senior Member
 
Join Date: Jul 2011
Location: Gosport
Posts: 177
Default

Little update. So I fitted the new battery (as MJ's suggestion). Good voltage, car fired on the button, idled for a bit. Checked voltage 11.8V. so not charging. Connections good. Car back to idling like a pig, battery warning light on, EML flashing - car dead.

Physical inspection - Alternator has pooped itself, spins both ways so looks to be the same issue Ronin had a while back. So that is going to a WIP.

I am just hoping I have not stuffed the fuel pump, although on the key turn with the good battery I still hearing it 'doing its thing' so thats good eh?
__________________
Paul
Gosport UK
________________________
Audi A8 2002 2.8 Quattro Sport.
Daily Driver: BMW 530E M Sport.
Reply With Quote
  #18  
Old Today, 11:35 AM
Ronin's Avatar
Ronin Ronin is offline
Senior Member
 
Join Date: Jul 2019
Location: Wales
Posts: 439
Default

Let me know if you need the spare alternator I have, I can leave it at MJ's workshop if you want as I'm sure ill be in devon sooner rather than later
__________________
2002 Audi A8 2.8 Sport Quattro
Reply With Quote
  #19  
Old Today, 11:44 AM
strummagnet strummagnet is offline
Senior Member
 
Join Date: Jul 2011
Location: Gosport
Posts: 177
Default

Quote:
Originally Posted by Ronin View Post
Let me know if you need the spare alternator I have, I can leave it at MJ's workshop if you want as I'm sure ill be in devon sooner rather than later
Thanks Ronin, I don't plan to be in Devon this side of Christmas but will be in South Wales at some point
__________________
Paul
Gosport UK
________________________
Audi A8 2002 2.8 Quattro Sport.
Daily Driver: BMW 530E M Sport.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 06:56 PM.


Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.