Monster MotorsportVolks Autos
Results 1 to 19 of 19
  1. #1
    Neutral

    Status
    Offline
    Join Date
    Oct 2007
    Posts
    68

    Question 2.0TDi how long to warm up to 90c

    Hi,

    Calling all those A3 2.0 TDI (140) owners ... Mine is a 2007 sportback s-line and was wondering how long it "should" take to warm up to the 90 degrees ?

    I drive mine nice and gentle but it takes about 7-10 miles, approx 10-12 mins before it is getting anywhere near to 90 and this was before it got real cold outside ... this is mainly 30mph roads up to this point driving in 5th and 6th gear (if I manage to hit the traffic lights at the right time).

    Just wondered if this is normal ? My previous car (Subaru STi) got up to temp (well the dial said it was up to temp) in just a few mins ...

    Anyone got one the same ? or is my thermostat stuck open ?

    Thanks.

  2. # ADS
    ADS
    Join Date
    Always
    Posts
    Many
     
  3. #2
    Neutral

    Status
    Offline
    Join Date
    Sep 2007
    Location
    North-East UK
    Posts
    93
    That seems to be the same as mine.
    Diesels are so efficient that it does take a long time for them to get to the full operating temperature, especially when driven at slow speeds.

    One thing to check is the oil temperature, you will find this lags the water temperature by quite a bit. Even when the engine reaches 90 degrees, the oil may only be at 65 degrees and can take another few miles to get to it's normal range.
    MY2011 A1 TDI Sport
    Amalfi White, Sat Nav, Bose, Xenon Plus, Climate Control, Competition Line Trim, LED Interior Lights, Light & Rain Sensors, Polygon 18" Wheels. Retrofit Armrest, Cruise Control & Gauge Sweep. VCDS.

  4. #3
    stan's Avatar
    1st Gear

    Status
    Offline
    Join Date
    Dec 2006
    Location
    Devon
    Posts
    136
    They do take a little while to warm up thats why the diesels get an electric heater to boost cabin warm up.
    S-Line

  5. #4
    mcmasman's Avatar
    1st Gear

    Status
    Offline
    Join Date
    Mar 2007
    Location
    Norway
    Posts
    152
    Sounds like the same as mine, around 10 mins, and it's -5c here.
    2007 Lava grey A3 2.0 140 TDI Quattro Sportsback
    S-line int/ext, cruise, mfsw, aluminum rails, Xenons+, coming-leaving home, light + rain, parking sensors, hill hold, Bluefin, 18" OEM double 7-spokes RS4 alloys

  6. #5
    Neutral

    Status
    Offline
    Join Date
    Oct 2007
    Posts
    68
    Thanks all for replying,

    That puts my mind at rest ...

    Electric heater for the cabin - I was not aware of that, but on reflection the air coming into cabin does have a warm feel quite quickly ....

    Clever those Audi people ...

    Thanks Again ....

  7. #6
    benw123's Avatar
    Moderator

    Status
    Offline
    Join Date
    Oct 2004
    Location
    Herts, UK
    Posts
    1,863
    Quote Originally Posted by JST_A3
    One thing to check is the oil temperature, you will find this lags the water temperature by quite a bit. Even when the engine reaches 90 degrees, the oil may only be at 65 degrees and can take another few miles to get to it's normal range.
    Absolutely right. I used to drive a Focus ST170 which had a separate oil temperature gauge, and this wouldn't reach normal level for at least 20 minutes of normal driving.

    Incidentally, my 140 TDI also takes around 10-15 minutes depending on where I'm headed (i.e. urban or motorway), and I always drive away straight from cold with no warm-up and low revs.
    2004 A3 Sportback 2.0TDI SE, RNS-E Sat Nav SW0650 TMC, 17" Star Alloys, Xenons, DIS, Rear Mats & Sunblind, Alu trim, Ebony Black pearlescent
    2006 Honda Accord EX i-CTDI, Arctic Blue, Leather, Sat Nav, XCarLink

  8. #7
    N8
    N8's Avatar
    Kowalski Details

    Status
    Offline
    Join Date
    Jul 2007
    Location
    Salford, Manchester
    Posts
    17,110

    My Social Networking

    Add N8 on Facebook Visit N8's Instagram Channel

    Smile

    Quote Originally Posted by stan
    They do take a little while to warm up thats why the diesels get an electric heater to boost cabin warm up.
    thats really useful 2 know....

  9. #8
    Simon66's Avatar
    Neutral

    Status
    Offline
    Join Date
    Jun 2007
    Posts
    63
    Yes thats about right, mine takes a good 10 mins driving.

  10. #9
    4th Gear

    Status
    Offline
    Join Date
    Aug 2004
    Location
    Aberdeenshire
    Posts
    740
    Depending on the ambient temp our A4 1.9 PD130 can be showing above 50 degrees after just over a mile of 30mph town driving. It's then out onto dual carriageway and it'll be at 90 by the next roundabout which is about 4 miles from home.

    With the colder weather it does take longer but it's still at 90 after about 5-6 miles.

  11. #10
    Matt's Avatar
    5th Gear

    Status
    Offline
    Join Date
    Jul 2006
    Location
    Cumbria
    Posts
    1,416
    My 170's oil temp doesn't really go above 80 unless I drive fast then it'll reach 90 before dropping back to 80 when I ease off. Takes about 10 miles to get up to 80!

  12. #11
    Teejay's Avatar
    Mellow Yellow

    Status
    Offline
    Join Date
    Jul 2007
    Posts
    303
    My 140 will warm up to 90 in 10-12 mins of 30-40mph driving. Or 5-6 mins of 30-40 followed by 2 mins of 70mph.

    Incidentally by driving at 30mph in 5th or 6th you're burning more fuel than necessary and prolonging the warm up time. The most efficient engine speed is 1600-1800rpm, so at 30mph that would put you in 3rd or 4th.

  13. #12
    Neutral

    Status
    Offline
    Join Date
    Oct 2007
    Posts
    68
    "The most efficient engine speed is 1600-1800rpm"

    Is this for cold to warm transition or for all diesel driving ?
    I have been trying to drive it at around 1200-1400rpm all the time (apart from pulling off or overtaking etc) thinking it is efficient ... so I am driving it "wrong" ? Never owned a diesel before so I am a bit new to this style of driving ...

    ???

    Think I will start a new thread to see peoples views as this could be interesting ...

    Thanks.
    Last edited by sukrw; 17th November 2007 at 22:06.
    2007 Lava grey, A3, 2.0 140 TDI, Sportsback, S-Line, Cruise Control (Retro Fit)

  14. #13
    5th Gear

    Status
    Offline
    Join Date
    Apr 2004
    Posts
    1,139
    i read somewhere that if you leave a diesel ticking over it will never get to operating temperature as at tickover the heat produced is minimal - so defo best starting then driving straight away - and not too softly.

    I've started putting my car in sport on cold mornings to keep the revs between 2-3k (its a dsg) this seems to help warm up faster although it does hurt fuel economy (i end up with about average 30mpg when i get to work) petrols warm up miles faster but thats because they are more inefficient

  15. #14
    Teejay's Avatar
    Mellow Yellow

    Status
    Offline
    Join Date
    Jul 2007
    Posts
    303
    Not sure about with a DSG, but with a Manual TDi that uses an electronic throttle (as opposed to cable throttle) then the point when the fuel injection is inputting the least fuel is the point when the turbo has just spun up. At this point the turbo is doing all the hard work, below this engine speed the ECU has to add more fuel to effectively stop the engine stalling.

    This is all stated in the A3 Owners Manual..... amongst other places.

  16. #15
    4th Gear

    Status
    Offline
    Join Date
    Aug 2004
    Location
    Aberdeenshire
    Posts
    740
    Quote Originally Posted by sukrw
    "The most efficient engine speed is 1600-1800rpm"

    Is this for cold to warm transition or for all diesel driving ?
    I have been trying to drive it at around 1200-1400rpm all the time (apart from pulling off or overtaking etc) thinking it is efficient ... so I am driving it "wrong" ? Never owned a diesel before so I am a bit new to this style of driving ...

    ???

    Think I will start a new thread to see peoples views as this could be interesting ...

    Thanks.
    The most efficient engine speed for any engine is around the point where peak torque is produced. So around 2k rpm for the 1.9 and 2.0 TDIs. That equates to 3rd gear at 30, 4th at 40, 5th at 50 and above and 6th from 65 onwards in our 1.9 130

  17. #16
    sat1983's Avatar
    4th Gear

    Status
    Offline
    Join Date
    Feb 2007
    Location
    Sheffield
    Posts
    700
    I'm surprised people are asking which gear they should be in!! I wasn't used to a diesel a year ago but immediately realised that being in 4th at 30 mph in my 2.0 TDI didn't "feel" right. I was taught this years ago on my driving lessons!!
    Ex 2006 A3 2.0 TDI owner

    2010 Polo GTI 6R

  18. #17
    Matt's Avatar
    5th Gear

    Status
    Offline
    Join Date
    Jul 2006
    Location
    Cumbria
    Posts
    1,416
    Quote Originally Posted by sukrw
    "The most efficient engine speed is 1600-1800rpm"

    Is this for cold to warm transition or for all diesel driving ?
    I have been trying to drive it at around 1200-1400rpm all the time (apart from pulling off or overtaking etc) thinking it is efficient ... so I am driving it "wrong" ? Never owned a diesel before so I am a bit new to this style of driving ...

    ???

    Think I will start a new thread to see peoples views as this could be interesting ...

    Thanks.
    Anything below about 1500rpm feels like its straining the engine so I would keep the revs up a bit more if I were you!

  19. #18
    Amchlolor's Avatar
    6th Gear

    Status
    Offline
    Join Date
    Jan 2005
    Location
    Aberdeen
    Posts
    5,602
    My commute is roughly 4 miles.
    A combination of about 3 miles of 30-40mph roads, combined with the last miles of sitting at crawling pace.
    On some winter mornings, my temp gauge barely moves.
    The interior of the car can hardly be called warm either.
    '02 to '05 - Black Audi A4 1.9tdi sport
    '05 to '08 - Akoya Silver A3 sportback S-line DSG
    '08 to ? - Black Alpina D3

  20. #19
    Teejay's Avatar
    Mellow Yellow

    Status
    Offline
    Join Date
    Jul 2007
    Posts
    303
    is that cos you're commuting on the bike Bowfer??

 

 

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Single Sign On provided by vBSSO

Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

Content Relevant URLs by vBSEO