A8 Parts Forum  

Go Back   A8 Parts Forum > A8 D3 > D3 - Engine Bay

D3 - Engine Bay Everything under the bonnet

Reply
 
Thread Tools Display Modes
  #1  
Old 13th September 2018, 11:00 AM
MattyV8's Avatar
MattyV8 MattyV8 is offline
Junior Member
 
Join Date: Sep 2018
Location: Stoke on Trent
Posts: 26
Default 2006 4.2tdi warm up time

Hi All,

Quick question - just wondering how long this engine should take to get to 90c as I have a 11 mile drive to work and it gets to just under 90c in that time. Does this seem right? I know its a big engine but apparently the 4.2 fsi takes 5-6 miles which is half the time.

Wondering whether the thermostat may be at fault.

Cheers!
__________________
2006 Audi A8 4.2tdi Sport

Reply With Quote
  #2  
Old 13th September 2018, 11:06 AM
HPsauce HPsauce is offline
Senior Member
 
Join Date: Sep 2011
Location: About 250m from HS2!
Posts: 6,521
Default

I don't know if the D3 is the same, but the temperature gauge on a D2 is at best an "indication".
__________________
2003 D2 FL S8. Irish Green Pearl/Beige. Solar sunroof, auto-dim mirrors, electric rear seat functions, ski hatch retrofit; extended leather. Aftermarket DVB-T, reversing camera and full XCarlink (Bluetooth etc.).
2016 Volvo V40 T5 Cross Country (4WD) with ALL the toys including adaptive cruise etc. etc. Osmium Grey with Blonde/Charcoal leather interior. Polestar performance "optimisation".
Finally: gone, but not forgotten.....
1998 D2 PF S8. AgateGrey/Platinum. Every option (I think) except electric rear seats, tiptronic steering wheel, ski hatch, towbar & dimming door mirrors.
e.g. Cruise control, NavPlus/TV, Bose, GSM, Xenons, Solar roof, Parking sensors, Alcantara/leather everywhere of course. (internal dimming mirror added later)
1998 (very early) Ford Focus 1.8 Zetec; ABS/TCS, Heated screen/mirrors, Aircon, Auto-dim mirror, Leather, Trip computer, Cruise control, OEM Ford SatNav with CD changer.
Reply With Quote
  #3  
Old 13th September 2018, 11:40 AM
paulrstaylor paulrstaylor is offline
Senior Member
 
Join Date: Jul 2010
Location: Manchester
Posts: 974
Default

Been a while since I had a D3, but all things being equal sounds about right.

Diesel engines are more thermally efficient than petrol, so much so that they often need an auxiliary heater so you don't have to sit in a cold car for ages in the winter!

On the D3, that is diesel fueled and sits on the coolant circuit. In the summer this won't activate, so 12 miles to get "warm" doesn't seem unusual?
Reply With Quote
  #4  
Old 13th September 2018, 12:15 PM
MattyV8's Avatar
MattyV8 MattyV8 is offline
Junior Member
 
Join Date: Sep 2018
Location: Stoke on Trent
Posts: 26
Default

Quote:
Originally Posted by paulrstaylor View Post
Been a while since I had a D3, but all things being equal sounds about right.

Diesel engines are more thermally efficient than petrol, so much so that they often need an auxiliary heater so you don't have to sit in a cold car for ages in the winter!

On the D3, that is diesel fueled and sits on the coolant circuit. In the summer this won't activate, so 12 miles to get "warm" doesn't seem unusual?
Thanks for that, it makes sense. I had a 3.0l x5 previously so guess I was used to that. Will be interesting to see what difference winter makes.
__________________
2006 Audi A8 4.2tdi Sport

Reply With Quote
  #5  
Old 13th September 2018, 04:37 PM
clubadria clubadria is offline
Member
 
Join Date: Jun 2015
Posts: 46
Default

I think mine is about the same, I travel 20 miles some dual then A roads, today was a bit cold first thing 06.30, I noticed the temp inside took longer to warm up.
Reply With Quote
  #6  
Old 13th September 2018, 07:57 PM
MattyV8's Avatar
MattyV8 MattyV8 is offline
Junior Member
 
Join Date: Sep 2018
Location: Stoke on Trent
Posts: 26
Default

On the roads I travel, I barely get over 40 for the first 8 miles then 60 for the last 2-3.

Thanks for the input.

Love this car!
__________________
2006 Audi A8 4.2tdi Sport

Reply With Quote
  #7  
Old 14th September 2018, 12:00 PM
IT's Avatar
IT IT is offline
Administrator
 
Join Date: Jan 2009
Location: Harrogate, North Yorkshire
Posts: 5,639
Default

Sounds like your Aux heater aint working, which isn't uncommon.

D3 4.2 TDi should heat up reasonably quickly.

D4 4.2 Tdi they did away with the engine heater, and put electric elements in the air flow to the cabin instead, so the engine takes ages to warm up, but you get warmth in the cabin straight away.
__________________
For parts enquiries and Forum User Administration please contact customer services directly, not me - enquiry@a8parts.co.uk, www.a8parts.co.uk, or call 01642 783537

His Daily - 2016 S5 coupe ex press demo. Daytona Grey. Adaptive Cruise Control, Side Assist, Lane Assist, Flat bottom steering wheel, 360 Degree Cameras, Park Assist, Matrix headlights with sweeping indicators, Dynamic steering, Dynamic Suspension, Sports diff, Cockpit display, Privacy glass, Storage pack, Advance key, Phone box, Folding mirrors, Multicolour interior light pack, Carbon inlays, Bang and Olufsen, Audi connect, Traffic jam assist, Traffic sign recognition, Heads up display... What a machine.....

Her Daily - 2007 Q7 4.2 FSi, Muguello Blue with ABT bodykit and 22" Alloys, Adaptive Cruise, Bose, Xenons, Privacy glass, extended leather, 6 seats, Reversing camera, keyless, memory seats, electric steering column, auto boot, auto dim mirrors, Heated front and rear seats, full black leather

The First 20 Audis:

2001 D2 4.2 QS Silver,
1997 D2 S8 Silver,
1999 D2 4.2 Silver,
2002 D2 S8 Dolphin Grey,
2003 C5 RS6 Blue,
1998 D2 S8 Black,
2000 D2 4.2 QS/S8 Ming Blue,
2003 D3 4.2 Ming Blue,
2005 B7 S4 Blue,
2006 D3 3.0 Tdi Black,
1999 D2 4.2 Silver,
2003 D3 4.2 LPG Crystal Blue,
2000 D2 S8 Silver,
2007 3.0 Tdi Q7 Black,
2009 B8 S4 Black,
1998 D2 S8 Agate Grey,
2006 D3 4.2 Tdi Blue,
2006 D3 S8,
2007 Q7 3.0 Tdi,
2006 C6 S6,

The Second 20 Audis:

2011 A7 Sline,
2001 A2 1.4 Tdi Black,
2002 A2 1.4 Tdi Silver,
2006 A8 4.2 Tdi Blue,
2007 4.2 Tdi Q7,
2006 S4 Cab Silver,
2010 RS6 Saloon Black ,
2007 TT Roadster,
2010 A8 D4 4.2 Silver,
2006 C6 A6 2.7 Tdi Quattro,
2000 D2 4.2 QS/S8 Ming Blue (again),
2008 Q7 4.2 Black,
2009 C6 RS6 Saloon Daytona Grey,
2001 Fully Loaded A2 Tdi,
2006 Avant S6 Black,
2007 VW Caravelle Exec Black (almost an Audi)
2009 TT Roadster Daytona,
2015 Q7 4.2 tdi lava grey,
2002 GmbH D2 demonstrator,
2006 D3 A8 LWB 4.2 Tdi Black
Reply With Quote
  #8  
Old 14th September 2018, 02:54 PM
ivanhoe's Avatar
ivanhoe ivanhoe is offline
Junior Member
 
Join Date: Sep 2017
Location: Stoke-on-trent
Posts: 21
Default

Going to work this morning, only 3 miles, was at 70degrees. Normally on the way home, slightly different, faster route, 3.5 miles 90degrees.
Gauge starts moving off 50 at about 1 mile.
__________________
2006 A8 d3 4.2tdi sport stoke-on-trent.
Reply With Quote
  #9  
Old 14th September 2018, 07:44 PM
MattyV8's Avatar
MattyV8 MattyV8 is offline
Junior Member
 
Join Date: Sep 2018
Location: Stoke on Trent
Posts: 26
Default

Oh right, maybe an issue then? Wonder how big a job changing that part would be
__________________
2006 Audi A8 4.2tdi Sport

Reply With Quote
  #10  
Old 14th September 2018, 08:24 PM
ivanhoe's Avatar
ivanhoe ivanhoe is offline
Junior Member
 
Join Date: Sep 2017
Location: Stoke-on-trent
Posts: 21
Default

Carista scan should reveal a problem with the aux. Heater. If a problem exists.
The engine undertrays off mine at the moment and I did notice the aux heater exhaust sticking down.
If look in D3 common faults you' ll find all the manuals to download.
__________________
2006 A8 d3 4.2tdi sport stoke-on-trent.
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 05:45 AM.


Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.