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Topic: heavy fuel consumption. (Read 2435 times) |
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emptypockets
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heavy fuel consumption.
« on: Nov 12th, 2009, 11:53am » |
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Hello from a new boy, man, quite old man really.
After years driving Granadas I now have my first Scorpio, a 2.3 Ultima saloon. I am seriously impressed. Have a few odds and ends to sort out but there is one massive problem which was not evident on the test drive.
Would you believe 54miles covered on 20 litres!
No leaks anywhere, so before delving into anything I would be extremely grateful if anyone can point me in the best direction, (apart from sell it again quickly) to find the most likely culprit or culprits.
Cheers
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John
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gozz
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Re: heavy fuel consumption.
« Reply #2 on: Nov 12th, 2009, 4:11pm » |
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emptypockets.
You need to get an OBD scan done really,it will tell you which unit or sensor is faulty so that you can change it.Obviously don't go to a Ford dealer,a small sensible garage or diagnostic man should do it for £25 in the hand.
12 mpg is not good,you should get about 28.
GOZZ.
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10mpg
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Re: heavy fuel consumption.
« Reply #3 on: Nov 12th, 2009, 4:13pm » |
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Whats that in mpg...?
my 2.3 gets high 20's mpg is driven by my missus and low twenties occasionally dipping into the teens if i drive it 
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Tekno
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Tenho Ruohoranta
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Re: heavy fuel consumption.
« Reply #4 on: Nov 12th, 2009, 4:51pm » |
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I get usually 24 mpg. 28 mpg only once when I drove highway at constant slow speed for many hours
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1998 Ford Scorpio Ultima Estate 2.3i 16V
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Highlander
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13 Scorpios, XR4x4, Suzuki SJ413 for off road :)
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Re: heavy fuel consumption.
« Reply #5 on: Nov 12th, 2009, 5:36pm » |
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on Nov 12th, 2009, 11:53am, emptypockets wrote:
Hello from a new boy, man, quite old man really.
After years driving Granadas I now have my first Scorpio, a 2.3 Ultima saloon. I am seriously impressed. Have a few odds and ends to sort out but there is one massive problem which was not evident on the test drive.
Would you believe 54miles covered on 20 litres!
No leaks anywhere, so before delving into anything I would be extremely grateful if anyone can point me in the best direction, (apart from sell it again quickly) to find the most likely culprit or culprits.
Cheers
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Hello, I'm assuming its a new car to you and this is your first 54 miles??
have you used the readings from the fuel computer to work this out? they can be way out depending on the recent settings and how its been driven.
Best way is to fill the tank then do a lot of miles then refill it to get a good reading of the actual mpg
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on Oct 17th, 2011, 12:35pm, Simmo wrote:| I give up ! Too much for an old boy! |
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emptypockets
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Re: heavy fuel consumption.
« Reply #6 on: Nov 12th, 2009, 5:44pm » |
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Many thanks.
Computer and trip, together with a rough idea of the actual distance all point to something way out. I shall try and locate a local garage with suitable diagnostic gear. I know it would make sense to go to a Ford dealership but I would need one of those lottery wins to even contemplate it.
Cheers.
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John
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tonyboy
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black2.924Vcoss ( No More )
  
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Re: heavy fuel consumption.
« Reply #7 on: Nov 12th, 2009, 8:55pm » |
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On average i get about 68 miles for 20 litres. And thats a 2.9 24V.............
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I think i'm going, erm what do you call it..... Senial....
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Highlander
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Re: heavy fuel consumption.
« Reply #8 on: Nov 12th, 2009, 9:02pm » |
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I wouldnt go spending money on a diagnostic check on the basis of 54 miles,
there is no way you can get an accurate mpg reading from that, you may well have 10 litres left in the tank, dont go by the fuel computer just now
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on Oct 17th, 2011, 12:35pm, Simmo wrote:| I give up ! Too much for an old boy! |
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homer2themax
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'95 12v Aubergine Saloon
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Re: heavy fuel consumption.
« Reply #9 on: Nov 12th, 2009, 9:44pm » |
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I agree with Highlander.
54 miles on a run or in heavy traffic?
Also, is it manual or auto, the difference can mean a couple of mpg.
And if it's auto, is it changing gear correctly?
I only really use my car for nipping to the shops and I've seen the computer show an average of 13mpg in the past, depending how hard I drive it.
Best to get a proper reading by resetting the computer and taking it for a cruise.
HTH
Mark
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emptypockets
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Re: heavy fuel consumption.
« Reply #10 on: Nov 12th, 2009, 11:05pm » |
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Hi.
20lts of fuel returned 54 miles in mostly traffic free conditions.
The car is a 2.3 auto.
Forgetting about the computer, the guage was on empty, the odometer was set to zero, it recorded 54 miles and the guage was back to almost zero.
Since my first post The above has been repeated over a distance I know to be 55 miles with the same result.
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John
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Highlander
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Re: heavy fuel consumption.
« Reply #11 on: Nov 12th, 2009, 11:44pm » |
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Dont trust the gauge, you tank may be sitting 3/4 full and showing empty...
too many variables, ifs and buts when you've only used 40 litres, you still have no real guide as to the mpg.
There may well be something amiss but I wouldnt be looking at anything else before I had a definite mpg figure worked out by filling the tank then refilling it and using the fuel used and the mileage covered.
Is the car running ok?
plenty power and responsive?
I have limped home in a 2.0 16v 300 miles on two cylinders and still returned 20mpg so I would very much doubt an engine fault would be giving you the 12mpg figure you mention.
There is either a fuel leak you havent found or the mpg is incorrect.
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on Oct 17th, 2011, 12:35pm, Simmo wrote:| I give up ! Too much for an old boy! |
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emptypockets
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Re: heavy fuel consumption.
« Reply #12 on: Nov 13th, 2009, 3:31pm » |
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Many thanks.
The engine runs fine and is very responsive for a 2.3lt. It is a bit tappety first thing in the morning but I intend to change the oil and filter after flushing to see if there is any improvement.
I will fill the tank to the gills and check the refill after the weekend.
Cheers
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John
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gozz
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Re: heavy fuel consumption.
« Reply #13 on: Nov 13th, 2009, 4:19pm » |
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Yes,that's the only true way of doing it.Keep us posted on the result.
GOZZ.
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Stixy
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Re: heavy fuel consumption.
« Reply #14 on: Nov 13th, 2009, 9:20pm » |
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As said above fill the tank & zero the trip and drive it until it beeps 50 miles to go then fill it again and note down how many litres it took to fill it then work your litres into gallons then divide your miles by the gallons etc
My 2.3 auto estate averages 25-29 mpg and thats with a duff autobox that only uses the first 3 gears
Somthing else that might be worth a mention is i havent had a Scorpio yet with an acurate speedo most seem about 7 mph under actual speed
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gozz
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Re: heavy fuel consumption.
« Reply #15 on: Nov 13th, 2009, 10:14pm » |
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Stixy.
Do you mean over actual speed ? If you follow a large lorry on the open road it appears to be doing 60mph,but they are limited to 56mph by speed limiter.
GOZZ.
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Stixy
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Re: heavy fuel consumption.
« Reply #16 on: Nov 13th, 2009, 10:19pm » |
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on Nov 13th, 2009, 10:14pm, gozz wrote:Stixy.
Do you mean over actual speed ? . |
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Yes over reading sorry  its been a long day
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tlundkvi
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Ex. Scorpio 2.9 24V -95
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Re: heavy fuel consumption.
« Reply #17 on: Nov 14th, 2009, 7:05am » |
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on Nov 13th, 2009, 9:20pm, Stixy wrote:| Somthing else that might be worth a mention is i havent had a Scorpio yet with an acurate speedo most seem about 7 mph under actual speed |
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The VSS is quite correct IMHO, the meter error is introduced to the needle, internally the car knows it's exact speed (e.g. compare ODB reading with satnav).
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Highlander
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Re: heavy fuel consumption.
« Reply #18 on: Nov 18th, 2009, 2:59pm » |
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on Nov 13th, 2009, 3:31pm, emptypockets wrote:Many thanks.
The engine runs fine and is very responsive for a 2.3lt. It is a bit tappety first thing in the morning but I intend to change the oil and filter after flushing to see if there is any improvement.
I will fill the tank to the gills and check the refill after the weekend.
Cheers
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Any luck?
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on Oct 17th, 2011, 12:35pm, Simmo wrote:| I give up ! Too much for an old boy! |
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emptypockets
Junior Member
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Posts: 71
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Re: heavy fuel consumption.
« Reply #19 on: Nov 18th, 2009, 3:12pm » |
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Hi again.
Still haven't reached the refill stage. I am trying to get a complete mix of driving conditions to return a truer mpg figure.
Don't know how accurate the computer is but after filling to the neck a few days ago, I drove in very light traffic/dual carriageway mode for about 15 miles and it was showing 31mpg. If that is anywhere nearly true I would be well pleased.
Many thanks.
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John
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