Sky InsuranceMonster Motorsport
Results 1 to 19 of 19
  1. #1
    Biodiesel Purrrr

    Status
    Offline
    Join Date
    Jun 2011
    Location
    London
    Posts
    150

    TDi AFN - Diesel fuel heater... where is it?

    Mornign all,
    I remember reading that my TDi AFN has a fuel heater to warm the diesel on cold days / startup...
    As I run 100% biodiesel this heater will be most useful in coming cold mornings,
    so...
    any ideas on where it is - engine bey or fuel tank?
    and, how could it be tested?

    searched interweb and owners' manual but no info on where it is...

    cheers,
    P)
    TDi Biodiesel sippin' A4 Avant - EGR blanked
    "Cars are good but Jeremy Clarkson is a dick."



  2. # ADS
    ADS
    Join Date
    Always
    Location
    Global
    Posts
    Many
     
  3. #2
    ScottD3's Avatar
    I want your faulty electronics

    Status
    Online
    Join Date
    Nov 2010
    Location
    English Riviera
    Posts
    14,655
    I got the same engine and I got no idea.
    I never knew we had one. Be interested to know if we do and where, I also run bio diesel every now and then.

    winters coming and its time to drop the palm mixture.
    A4 B5 Double Din, RNS-d, TMC, Full Sports Leather Heated with Leather Door Cards and Lower Door trims all for sale.

    Audrey's Build Thread
    RIP Audrey. She's being broken down.
    New Car, New Thread.
    Scott's Akoya Silver A8

  4. #3
    1st Gear

    Status
    Offline
    Join Date
    Feb 2009
    Posts
    228
    i think the fuel heater is just the fuel return from the pump which in turn warms the tank.....

    good luck running bio in winter, i did last year allbeit last year was rediculously cold but my car was rendered useless when the bio all waxed up. was frozen in the tank, the lines and the ip in the engine bay. If your going to try it anyway and hope for a milder winter i might suggest a big bit of wood infront of the rad to keep the engine bay temps up or you will see stuttering at cruising speed and lack of power.

    also when the bio froze in the ip it broke the fuel temp sensor so i had to replace that (and buy the tool to open the ip up)....

    on the plus side - i'll let you borrow the tool if yours goes!

    good luck

  5. #4
    ScottD3's Avatar
    I want your faulty electronics

    Status
    Online
    Join Date
    Nov 2010
    Location
    English Riviera
    Posts
    14,655
    Quote Originally Posted by fARQUARE View Post
    i think the fuel heater is just the fuel return from the pump which in turn warms the tank.....

    good luck running bio in winter, i did last year allbeit last year was rediculously cold but my car was rendered useless when the bio all waxed up. was frozen in the tank, the lines and the ip in the engine bay. If your going to try it anyway and hope for a milder winter i might suggest a big bit of wood infront of the rad to keep the engine bay temps up or you will see stuttering at cruising speed and lack of power.

    also when the bio froze in the ip it broke the fuel temp sensor so i had to replace that (and buy the tool to open the ip up)....

    on the plus side - i'll let you borrow the tool if yours goes!

    good luck

    never had a problem over the last 4 years or running bio. Granted I never run pure bio.
    what was your bio made out of and how was it processed?
    when the weather starts getting colder we drop the palm from our mixture and move over to pure rapeseed oil and use acid to process, this help lower the freezing point.
    A4 B5 Double Din, RNS-d, TMC, Full Sports Leather Heated with Leather Door Cards and Lower Door trims all for sale.

    Audrey's Build Thread
    RIP Audrey. She's being broken down.
    New Car, New Thread.
    Scott's Akoya Silver A8

  6. #5
    1st Gear

    Status
    Offline
    Join Date
    Feb 2009
    Posts
    228
    no idea - bought from apple fuels in glasgow.

    all i know is bio didn't work for me at -15 for 2 weeks

  7. #6
    Biodiesel Purrrr

    Status
    Offline
    Join Date
    Jun 2011
    Location
    London
    Posts
    150
    good quality Biodiesel should contatin NO plam oil for above reasons,
    reputable suppliers will add witerizers and octane boosters as my North London supplier does...

    if not, I add 20% diesel or [ehem...] 2% petrol - [at your own risk...] but the AHU loved it!

    I ran it for 3 years in AHU engine with no probs whatsoever

    maybe I should just put in new glow-plugs to get it warmer
    TDi Biodiesel sippin' A4 Avant - EGR blanked
    "Cars are good but Jeremy Clarkson is a dick."



  8. #7
    6th Gear

    Status
    Offline
    Join Date
    Jul 2007
    Location
    London
    Posts
    3,074
    There is no fuel heater on the 1.9 tdi engine, you can buy aftermarket heaters from USA, they have been using bio for years and their winters are much colder than in uk. Do a search for "frostheater"...
    FOR SALE:
    -Golf mk 5/audi a3 1.6 FSI fuel pump, brand new genuine part boxed + seals
    -audi a3 (1998 to 2003) genuine clutch slave cylinder to fit 1.6 engines BRAND NEW
    -Rear bush press tool to fit new rear axle bushes on Golf Mk3/4, Audi a3/S3, Seat Leon/Toledo, Skoda Octavia mk 1/2 used once

  9. #8
    "Stick a V8 in it!"

    Status
    Offline
    Join Date
    Jan 2008
    Location
    Glenrothes, Fife, Scotland
    Posts
    14,904
    You shouldnt need to block the radiator up with bits of wood. Thats what the thermostat is for.

    If the stat is working, no water will flow thru the radiator util the engines up to 90c.

    Some pugs have a heated fuel filter housing, which may help a little, but its not going to fix it if the fuels waxed so badly the engine wont start as it uses engine coolant.

    2000 A4 1.8T Sport Quattro Avant, Berry Pearl
    2000 A4 1.8T Sport Quattro Saloon, Black-ish
    1997 S4 - PPC £999 Challenge Track Car Build
    TD5 Land Rover Defender build


  10. #9
    6th Gear

    Status
    Offline
    Join Date
    Feb 2010
    Posts
    1,876
    you can get covers to stop cold air geting to the rad & engine, but it's got to be bloddy cold to use something like that, and I don't think we will ever see that sort of temp in the UK


  11. #10
    1st Gear

    Status
    Offline
    Join Date
    Feb 2009
    Posts
    228
    the wood is not to effect the water temp, it's to stop wind chill on the ip which is in direct air flow.

  12. #11
    6th Gear

    Status
    Offline
    Join Date
    Feb 2010
    Posts
    1,876
    I would look to do some sort of velcro cover setup where it could easy be removed.

  13. #12
    "Stick a V8 in it!"

    Status
    Offline
    Join Date
    Jan 2008
    Location
    Glenrothes, Fife, Scotland
    Posts
    14,904
    In that case, shield the IP itself, not the radiator.

    2000 A4 1.8T Sport Quattro Avant, Berry Pearl
    2000 A4 1.8T Sport Quattro Saloon, Black-ish
    1997 S4 - PPC £999 Challenge Track Car Build
    TD5 Land Rover Defender build


  14. #13
    ScottD3's Avatar
    I want your faulty electronics

    Status
    Online
    Join Date
    Nov 2010
    Location
    English Riviera
    Posts
    14,655
    IP?
    Internet protocol?
    A4 B5 Double Din, RNS-d, TMC, Full Sports Leather Heated with Leather Door Cards and Lower Door trims all for sale.

    Audrey's Build Thread
    RIP Audrey. She's being broken down.
    New Car, New Thread.
    Scott's Akoya Silver A8

  15. #14
    "Stick a V8 in it!"

    Status
    Offline
    Join Date
    Jan 2008
    Location
    Glenrothes, Fife, Scotland
    Posts
    14,904
    Injector Pump

    2000 A4 1.8T Sport Quattro Avant, Berry Pearl
    2000 A4 1.8T Sport Quattro Saloon, Black-ish
    1997 S4 - PPC £999 Challenge Track Car Build
    TD5 Land Rover Defender build


  16. #15
    1st Gear

    Status
    Offline
    Join Date
    Feb 2009
    Posts
    228
    ran fine all last winter using the wood (its actually more like 2mm fibreboard), secondly i'm sure that i've seen threads where people use stats in tdi's that open at higher temps as there is some sort of performance gain.....

    the chipboard in front of the rad has had no ill effects, only gets used in winter - which remember are much harsher up here in scotland than the occasional frosts you sometimes get down south.

    third, i remember reading an article in a motorbike mag which indicated that if you were riding at 70mph at 0 degrees, the windchill was -27! i'm not kidding when i say it was -15 for >2 weeks last winter, i'd like to know the windchill on that...
    i guess thats starting to get to the bottom of the operating range for most vehicles with no winter packs.

    fourth, in most cold counties i've been to in the world people block their rads with card or a plastic bag or something. Doesent make it right but i know what helped my cold running issues.

  17. #16
    "Stick a V8 in it!"

    Status
    Offline
    Join Date
    Jan 2008
    Location
    Glenrothes, Fife, Scotland
    Posts
    14,904
    I know all about scottish winters, i'm scottish myself.

    We used fibreboard on craigs S4 last winter because its thermostat was fubar and the guage wouldnt even move off the stop. But the problem is if your then driving in slow moving traffic, or stuck stationary etc, then the airflow thru the rad is substantially reduced. Craig had has temp guage showing 105c a few times an that was with only half of the radiator covered.

    Its dodgy at best, and we only did it because changing the stat on the S4 is a rediculous job that we didnt even want to contemplate in 12" of snow!

    I'd suggest if you've never changed it then fit a new stat, as it'll probably be tired, and then go from there.

    2000 A4 1.8T Sport Quattro Avant, Berry Pearl
    2000 A4 1.8T Sport Quattro Saloon, Black-ish
    1997 S4 - PPC £999 Challenge Track Car Build
    TD5 Land Rover Defender build


  18. #17
    4th Gear

    Status
    Offline
    Join Date
    Jul 2007
    Posts
    765
    Radiator covers used to be quite popular cos they can help an engine warm up quicker but they had to be monitored for overheating .Had one on a 50s ford pop when we we were married in 67 and someone rolled the blind closed so the thing burst its top hose on the way to the airport but those in the following cars gave us a lift and recovered the car which was covered in rusty water and it was fixed when we got back.Gave me something else to think about on honeymoon!

  19. #18
    1st Gear

    Status
    Offline
    Join Date
    Feb 2009
    Posts
    228
    changet it twice on this car.
    remember diesels run way cooler than petrol so can do with as much heat retention as possible in winter

  20. #19
    ScottD3's Avatar
    I want your faulty electronics

    Status
    Online
    Join Date
    Nov 2010
    Location
    English Riviera
    Posts
    14,655
    Sounds like you need the adjustable grill that ford has introduced on its cars.
    or some form of Venetian blind set up.
    A4 B5 Double Din, RNS-d, TMC, Full Sports Leather Heated with Leather Door Cards and Lower Door trims all for sale.

    Audrey's Build Thread
    RIP Audrey. She's being broken down.
    New Car, New Thread.
    Scott's Akoya Silver A8

 

 

Similar Threads

  1. Acetone in diesel fuel
    By BlackQuat in forum Diesel forum
    Replies: 4
    Last Post: 19th September 2013, 14:20
  2. Diesel Fuel Recommendations
    By jbs2472 in forum A3/S3/Sportback (8P Chassis)
    Replies: 8
    Last Post: 8th April 2011, 09:37
  3. Diesel fuel filter change 2.5 V6
    By owdgit in forum Diesel forum
    Replies: 9
    Last Post: 30th October 2010, 17:00
  4. fuel additives eg redex for diesel
    By blas in forum Diesel forum
    Replies: 4
    Last Post: 27th March 2010, 20:48
  5. best fuel source (diesel)
    By cyanescent in forum A3/S3/Sportback (8P Chassis)
    Replies: 14
    Last Post: 19th June 2007, 09:02

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