Chris NottJMB Retrofits
Results 1 to 23 of 23
Like Tree1Likes
  • 1 Post By Seeker_UK

Thread: What's Causing Excessive Fuel Consumption Following Repairs ?

  1. #1
    Seeker_UK's Avatar
    1st Gear

    Status
    Offline
    Join Date
    Jul 2011
    Location
    Wellingborough
    Posts
    101

    What's Causing Excessive Fuel Consumption Following Repairs ?

    It's just one damn thing after another.

    Last week, I got the cracked ATF cooler fixed - The rad was replaced, fluids replaced gearbox flushed etc etc.

    I put 4 new tyres on it and then filled up with diesel - to give it a treat I added some Miller's Diesel Ecomax.

    Now it's drinking diesel like it's going out of fashion. Before the repair, I was getting about 100 miles out of the first quarter of the tank, this time I'm getting 70 which equates to about 20mpg. Having just sunk a large amount of money, I'll be damned if I'm going to sink much more into it.

    What should I be looking at this time.

    SIgh.
    Last edited by Seeker_UK; 12th December 2011 at 21:58.
    2002 A4 2.5TDI Quattro Sport 180 Avant Tiptronic in metallic grey.Options (at the moment): Bose, CD Changer, Cruise Control, Heated Seats and Reverse Parking Sensors and that's about it.....

  2. # ADS
    ADS
    Join Date
    Always
    Location
    Global
    Posts
    Many
     
  3. #2
    JtotheD's Avatar
    Events Moderator

    Status
    Offline
    Join Date
    May 2011
    Location
    Bournemouth, Dorset/ Wallingord, Oxon
    Posts
    907
    Cold weather won't help either...
    S3 8L Ming Blue 273bhp & 294lbft h


    Build/project thread
    check it out!


  4. #3
    Seeker_UK's Avatar
    1st Gear

    Status
    Offline
    Join Date
    Jul 2011
    Location
    Wellingborough
    Posts
    101
    You're quite right but cold weather won't suddenly clobber my mpg from 28 to 20.
    2002 A4 2.5TDI Quattro Sport 180 Avant Tiptronic in metallic grey.Options (at the moment): Bose, CD Changer, Cruise Control, Heated Seats and Reverse Parking Sensors and that's about it.....

  5. #4
    JtotheD's Avatar
    Events Moderator

    Status
    Offline
    Join Date
    May 2011
    Location
    Bournemouth, Dorset/ Wallingord, Oxon
    Posts
    907
    well it won't drop that much from cold weather alone you're right - but on the bright side it's not as big a drop as you think as if the cold equates to like 2-3mpg drop then uve only lost 5mpg from something else... how does the exhaust sound? not blowing at all is it?
    S3 8L Ming Blue 273bhp & 294lbft h


    Build/project thread
    check it out!


  6. #5
    Seeker_UK's Avatar
    1st Gear

    Status
    Offline
    Join Date
    Jul 2011
    Location
    Wellingborough
    Posts
    101
    No, everything seems OK, starts on the button, quiet (in fact quite muted since I got it back), even idle.

    I think it's buggered and frankly, I just can't be doing with wasting any more money on the damn thing.
    2002 A4 2.5TDI Quattro Sport 180 Avant Tiptronic in metallic grey.Options (at the moment): Bose, CD Changer, Cruise Control, Heated Seats and Reverse Parking Sensors and that's about it.....

  7. #6
    quattrojames's Avatar
    Moderator

    Status
    Offline
    Join Date
    Mar 2008
    Location
    Dorset
    Posts
    13,856

    My Social Networking

    Follow quattrojames On Twitter Add quattrojames on Facebook
    Is it driving ok?

    Have you had it scanned for fault codes?
    Ingolstance Read about my A6 HERE.

  8. #7
    white.akita's Avatar
    1st Gear

    Status
    Offline
    Join Date
    May 2008
    Location
    county durham
    Posts
    280
    Get the codes read, or if you cant be bothered like you said just sell it.
    2003 A4 2.5 TDI QUATTRO AVANT

  9. #8
    Seeker_UK's Avatar
    1st Gear

    Status
    Offline
    Join Date
    Jul 2011
    Location
    Wellingborough
    Posts
    101
    Quote Originally Posted by quattrojames View Post
    Is it driving ok?

    Have you had it scanned for fault codes?
    Yes, it seems to be driving very well.

    The problem I have is getting time to get the faults read.
    quattrodave likes this.
    2002 A4 2.5TDI Quattro Sport 180 Avant Tiptronic in metallic grey.Options (at the moment): Bose, CD Changer, Cruise Control, Heated Seats and Reverse Parking Sensors and that's about it.....

  10. #9
    6th Gear

    Status
    Offline
    Join Date
    Nov 2009
    Location
    Lancaster
    Posts
    1,778
    Any chance they've knocked anything whilst doing it? A fuel line?
    Atlas Grey A4 2.5 TDI Quattro Sport.
    Mods so far: Cruise control, DIS, Heated Mirrors, Tuning box, Xenonx, Centre Arm Rest, MFSW, RNS-E, SDS and Aero Wipers.
    To do: None yet.
    Next: Auto dip rearview mirror and Folding Mirrors.

  11. #10
    Seeker_UK's Avatar
    1st Gear

    Status
    Offline
    Join Date
    Jul 2011
    Location
    Wellingborough
    Posts
    101
    Quote Originally Posted by white.akita View Post
    Get the codes read, or if you cant be bothered like you said just sell it.
    Taking your advice, I got the codes read. Nada, apart from an intermittent fault on the needle lift sensor. The mechanic said that it wasn't likely to be a cause of the problem - the biggies like coolant and MAF were OK. Also, no apparent leaks.

    Currently just squeezed 145 miles out of half a tank (normally get 200)

    Curiouser & curiouser.
    2002 A4 2.5TDI Quattro Sport 180 Avant Tiptronic in metallic grey.Options (at the moment): Bose, CD Changer, Cruise Control, Heated Seats and Reverse Parking Sensors and that's about it.....

  12. #11
    6th Gear

    Status
    Offline
    Join Date
    Jul 2007
    Location
    London
    Posts
    3,213
    Needle lift sensor will affect the Mpg and the engine wont run at it's full potential either !
    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

  13. #12
    quattrojames's Avatar
    Moderator

    Status
    Offline
    Join Date
    Mar 2008
    Location
    Dorset
    Posts
    13,856

    My Social Networking

    Follow quattrojames On Twitter Add quattrojames on Facebook
    Second that, almost certainly thats your problem.
    Ingolstance Read about my A6 HERE.

  14. #13
    6th Gear

    Status
    Offline
    Join Date
    Nov 2009
    Location
    Lancaster
    Posts
    1,778
    Deffo needle lift.
    When mine went the car woudl just stop running. Just die mid drive.
    Atlas Grey A4 2.5 TDI Quattro Sport.
    Mods so far: Cruise control, DIS, Heated Mirrors, Tuning box, Xenonx, Centre Arm Rest, MFSW, RNS-E, SDS and Aero Wipers.
    To do: None yet.
    Next: Auto dip rearview mirror and Folding Mirrors.

  15. #14
    Seeker_UK's Avatar
    1st Gear

    Status
    Offline
    Join Date
    Jul 2011
    Location
    Wellingborough
    Posts
    101
    OK but reading some other posts talking needle lift sensor problems and they talk about poor starting and rough idle and loss of power, none of which I seem to be experiencing.

    I better book it in to get it fixed, hopefully before Xmas.
    2002 A4 2.5TDI Quattro Sport 180 Avant Tiptronic in metallic grey.Options (at the moment): Bose, CD Changer, Cruise Control, Heated Seats and Reverse Parking Sensors and that's about it.....

  16. #15
    quattrojames's Avatar
    Moderator

    Status
    Offline
    Join Date
    Mar 2008
    Location
    Dorset
    Posts
    13,856

    My Social Networking

    Follow quattrojames On Twitter Add quattrojames on Facebook
    They're not cheap, £260 plus seems to ring a bell.
    Ingolstance Read about my A6 HERE.

  17. #16
    Seeker_UK's Avatar
    1st Gear

    Status
    Offline
    Join Date
    Jul 2011
    Location
    Wellingborough
    Posts
    101
    Quote Originally Posted by quattrojames View Post
    They're not cheap, £260 plus seems to ring a bell.
    Oh well, I've only spent £2000 on it so far this year - what's another £260?
    2002 A4 2.5TDI Quattro Sport 180 Avant Tiptronic in metallic grey.Options (at the moment): Bose, CD Changer, Cruise Control, Heated Seats and Reverse Parking Sensors and that's about it.....

  18. #17
    6th Gear

    Status
    Offline
    Join Date
    Nov 2009
    Location
    Lancaster
    Posts
    1,778
    Any chance it's had the loom damaged? As it's a very fine wire on the needle sensor.
    I did put a how2 on here on how to replace it.
    Atlas Grey A4 2.5 TDI Quattro Sport.
    Mods so far: Cruise control, DIS, Heated Mirrors, Tuning box, Xenonx, Centre Arm Rest, MFSW, RNS-E, SDS and Aero Wipers.
    To do: None yet.
    Next: Auto dip rearview mirror and Folding Mirrors.

  19. #18
    white.akita's Avatar
    1st Gear

    Status
    Offline
    Join Date
    May 2008
    Location
    county durham
    Posts
    280
    Quote Originally Posted by Seeker_UK View Post
    Oh well, I've only spent £2000 on it so far this year - what's another £260?
    how much have you actually spent trying to fix this problem ?
    2003 A4 2.5 TDI QUATTRO AVANT

  20. #19
    Seeker_UK's Avatar
    1st Gear

    Status
    Offline
    Join Date
    Jul 2011
    Location
    Wellingborough
    Posts
    101
    Quote Originally Posted by white.akita View Post
    how much have you actually spent trying to fix this problem ?
    Nothing yet but that's not the point.

    Thank you for your contributions to my thread but I am not spending any more money on it. It's going - it is a nail and I'm cutting my losses before things get even more expensive.
    Last edited by Seeker_UK; 16th December 2011 at 22:16.
    2002 A4 2.5TDI Quattro Sport 180 Avant Tiptronic in metallic grey.Options (at the moment): Bose, CD Changer, Cruise Control, Heated Seats and Reverse Parking Sensors and that's about it.....

  21. #20
    quattrojames's Avatar
    Moderator

    Status
    Offline
    Join Date
    Mar 2008
    Location
    Dorset
    Posts
    13,856

    My Social Networking

    Follow quattrojames On Twitter Add quattrojames on Facebook
    What exactly has been wrong with it? From your first post you've fitted a new transmission oil cooler and a radiator, but surely the fluid changes and tyres are service items and not really the cars fault?

    Sent from my BlackBerry 9900 using Tapatalk
    Ingolstance Read about my A6 HERE.

  22. #21
    Seeker_UK's Avatar
    1st Gear

    Status
    Offline
    Join Date
    Jul 2011
    Location
    Wellingborough
    Posts
    101
    Since I bought it:

    Car - £6000
    New cambelt, pump, thermostat, tensioners - £600
    Service, ATF fluid change - £350
    Respray for front wing after removing front pulled paint off - £150
    Radiator, fluids etc - £650
    4 new tyres - £400
    Various bits and bobs to replace broken trim etc - £30

    Diagnose & repair current problem - £300+ for sure.

    I know cars cost money but of all the cars I have had (and I have had a few, trust me), I have NEVER spent that much in 6 months on one, even the older ones. Even if I discount the wear and tear items, it's still £1400.

    One can argue that for the sake of £300+ it'll all be sorted but I just don't trust it any more.

    Thanks for all your help over the last 6 months but I don't want the worry. Owning a car shouldn't be a worry so I've got something more boring but has a 12 month warranty with it.

    I will be coming back to Audi - the A6 I had before the A4 was fantastic so I'm going to save up for a 2.7 or 3.0 which might be less troublesome.
    2002 A4 2.5TDI Quattro Sport 180 Avant Tiptronic in metallic grey.Options (at the moment): Bose, CD Changer, Cruise Control, Heated Seats and Reverse Parking Sensors and that's about it.....

  23. #22
    scottshere's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Dec 2010
    Location
    South Yorkshire
    Posts
    337
    Isnt all of that wear and tear apart from the front wing repaint?
    The car is 9 years old and guessing has seen a few miles.
    I'd say youve put in the effort to get the main things right (A lot of people dont) and have 1 more hurdle to jump
    But its your call at the end of the day as to where to draw the line
    A4 1.9TDI Sport - 130 (B6) / Mods: None yet, just getting the basic right first

  24. #23
    6th Gear

    Status
    Offline
    Join Date
    Jul 2007
    Location
    London
    Posts
    3,213
    Just thread carefully, just because they are newer does not mean they give less problems. I had a 56 reg a6 3.0 tdi quattro that needed 5 injectors at a cost of 900 quid 2nd hand. You need an older car (1.9 tdi in special) if you want it to be reliable but we all want new/modern cars ! Me personaly , i would not buy any car after 2004- waay to complicated and riddled with electronic problems. On the other hand i do work on my cars and i often buy them as spares or repairs ! So far i bought my allroad for £2300 last year, it needed work, tax and mot. Needed 2 track rod ends, 2 cv joints, front brake pads, rear brake pads and discs, rear caliper(seized), 2 front lower susp. arms (genuine from dealer £300), 2 drop links, 4 new top susp. arms and few more bits and bobs. Few weeks ago it dropped a valve and the engine got damaged- worn cam syndrome ! 700 quid in parts later and it's runing better as new... Who's to blame Me as a mechanic knowing that i have a loud engine and it needs an overhaul or the car because it broke ? It gave me plenty warning signs... Irony of the fate is that i ordered new set of Kolbensmidth cams an lifters a few days before and sold 2 good working engines just days before that ! I do in excess of 40k a year and i use the car primarely for towing- which it does admirably so when it breaks then it gets fixed- simples ! They 're just mere machines really, you can keep them going for a very long time- till rust set's in !!!!
    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

 

 

Similar Threads

  1. New A4 2.0TDI Quattro S Line SE - Excessive Fuel Consumption!!
    By lawco in forum Audi S4/A4/A4 Cab (B7 Chassis)
    Replies: 20
    Last Post: 7th January 2014, 10:58
  2. Aftermarket Cat and Turbo / excessive fuel
    By angelcakes in forum A4/A4 cabriolet/S4 forum(B6 chassis)
    Replies: 1
    Last Post: 26th October 2009, 21:10
  3. Excessive Oil Consumption.........
    By RobinA3 in forum A3/S3/Sportback (8P Chassis)
    Replies: 17
    Last Post: 5th January 2009, 18:22
  4. S4 fuel consumption
    By chrisa4quat in forum A4/S4 forum(B5 Chassis)
    Replies: 15
    Last Post: 29th March 2008, 13:44
  5. 2.8 Fuel consumption.
    By dufster in forum A4/A4 cabriolet/S4 forum(B6 chassis)
    Replies: 5
    Last Post: 9th July 2007, 23:17

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