td5 drinking problem

dieselreek · Jun 21, 2016

can anyone on here have any idea why my td5 disco auto only gets roughly 18.5 mpg and it is not towing anything

neilly · Jun 21, 2016

Evening,

How hard do you drive it?

Have you had it on diagnostics to check the engine is running OK and there are no faults showing?

What MPG are you expecting?

Is it completely std?

Cheers

Turboman · Jun 21, 2016

Like he says^^^^^^^^^^^.

Leadfoot disease is the most common. Or tuning issues, possible brake drag etc.

dieselreek · Jun 21, 2016

had new maf sensor . air and fuel filters , gearbox oil and filter change new brake calipers and pads recent mot passed emisions with flying colours

Turboman · Jun 21, 2016

dieselreek said:
had new maf sensor . air and fuel filters , gearbox oil and filter change new brake calipers and pads recent mot passed emisions with flying colours

Standard tyres and suspension? And driving style?

I haven't had a Td5, but I can get that out of my v8 Auto, so I would think that is way under what you should get.

dieselreek · Jun 21, 2016

Turboman said:
Standard tyres and suspension? And driving style?

I haven't had a Td5, but I can get that out of my v8 Auto, so I would think that is way under what you should get.

my old 300 got about 30mpg give or take
thinking i got a dud

Turboman · Jun 21, 2016

dieselreek said:
my old 300 got about 30mpg give or take
thinking i got a dud

Cant be too bad if it MOTd ok.

How long have you been driving it?

And what about the trans, does it seem to change up through all the gears ok?

dieselreek · Jun 21, 2016

got it in january, it seems to hang a bit before going into top gear but at first i was putting it down to being first auto i had ever driven.

after oil and filter change it improved but still seems to hang a bit before going into top

Turboman · Jun 21, 2016

dieselreek said:
got it in january, it seems to hang a bit before going into top gear but at first i was putting it down to being first auto i had ever driven.

after oil and filter change it improved but still seems to hang a bit before going into top

Did it always do that mileage, or has it got worse?

If it doesn't change up all the way it will hit the fuel mileage on the open road.

dieselreek · Jun 21, 2016

it has been crap milage since i got it

sierrafery · Jun 22, 2016

What size tyres? ... if they are more than 10% bigger you can expect anything, anyway, after a longer drive check the handbrake drum carefully with your hand and if it's hot there's the problem cos it means it puts load on the powertrain, also ckeck the wheels all around to rule out erratic braking on one axle

dieselreek · Jun 23, 2016

sierrafery said:
What size tyres? ... if they are more than 10% bigger you can expect anything, anyway, after a longer drive check the handbrake drum carefully with your hand and if it's hot there's the problem cos it means it puts load on the powertrain, also ckeck the wheels all around to rule out erratic braking on one axle

tyres are 255/55 r18 general grabbers at2 have fitted new calipers just before mot brakes not grabbing handbrake off it will roll in neutral on the slightest slope

janderson41 · Jun 23, 2016

Couple of points. How are you measuring fuel consumption?
Slow take up to top gear is more likely to be lock up ,which is usually about 52/55mph.
Also from cold auto box is designed to hold onto 3rd to allow warm up quicker.
My Td5 auto does 23/24 locally and about 30 on a long run.
Also can you change your location to more specific location,then possibly someone near could help.
And welcome to Td5/auto ownership. I love mine,even if it costs me. Had to fit a new auto box 18 months ago.
Hope this helps

Jim a
1996 Disco 1 auto (gone)
2002 Disco 2 auto

godzilla84 · Jun 26, 2016

That's pretty worrying MPG. My manual gets about 30-32 if driven sensibly and I have 235/85/16 BFG A/T on it and a winch and bumper etc so I have a fair bit of extra weight on board too. On my last check I got 22ish but I've been caning it recently and it's way overdue a service.

tulipandthistle · Jun 26, 2016

I get 30 MPG with driving calmly, this goes down to 24 MPG when flooring it. I drive a manual Td5 on General Grabber At2.

No diesel leak any where? Injector seals? Are your injectors programmed?
The first thing I did when I bought my Td5 was buying a nanocom. The best thing I did.

dieselreek · Jun 27, 2016

tulipandthistle said:
I get 30 MPG with driving calmly, this goes down to 24 MPG when flooring it. I drive a manual Td5 on General Grabber At2.

No diesel leak any where? Injector seals? Are your injectors programmed?
The first thing I did when I bought my Td5 was buying a nanocom. The best thing I did.

engine running sweet not drawing air in fuel system, will injector programming have to be done by a landy agent

tulipandthistle · Jun 27, 2016

When I replaced the injectors due to one breaking (literally breaking) I had to program the injector in. It runs without no bother but I think it could affect the Fuel consumption, however I could be wrong. Others or Sierrferry will know better than me. It is very simple to do with a nanocom

sierrafery · Jun 27, 2016

Injector coding would not affect the consumption IMO, it affects driveability at high revs(above 3000rpm)

darrenm · Jun 27, 2016

I get about 28 out of my auto all standard apart from remap

MJI · Jun 27, 2016

Are you definately getting lock up in top?

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