Go Back   EcoModder Forum > EcoModding > Instrumentation
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 03-23-2019, 06:15 PM   #1 (permalink)
EcoModding Lurker
 
Join Date: Feb 2016
Location: london uk
Posts: 4
Thanks: 0
Thanked 1 Time in 1 Post
Cool Distance to empty on Fiesta changes rapidly near end of tank

Have a '14 Ford Fiesta. Can get very confusing info from mpg read out if coming into London / large built up area if after a long run up from the south coast / free flowing roads .
It may go from showing 34 miles to tank empty to showing 6 in 3 miles ....... makes you think quick where the next fuel station is !

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 03-24-2019, 12:09 AM   #2 (permalink)
Master EcoModder
 
oldtamiyaphile's Avatar
 
Join Date: May 2009
Location: Australia
Posts: 1,510

UFI - '12 Fiat 500 Twinair
Team Turbocharged!
90 day: 40.3 mpg (US)

Jeep - '05 Jeep Wrangler Renegade
90 day: 18.09 mpg (US)

R32 - '89 Nissan Skyline

STiG - '16 Renault Trafic 140dCi Energy
90 day: 30.12 mpg (US)

Prius - '05 Toyota Prius
Team Toyota
90 day: 50.25 mpg (US)

Premodded - '49 Ford Freighter
90 day: 13.48 mpg (US)

F-117 - '10 Proton Arena GLSi
Pickups
Mitsubishi
90 day: 37.82 mpg (US)

Ralica - '85 Toyota Celica ST
90 day: 25.23 mpg (US)

Sx4 - '07 Suzuki Sx4
90 day: 32.21 mpg (US)

F-117 (2) - '03 Citroen Xsara VTS
90 day: 30.06 mpg (US)
Thanks: 325
Thanked 452 Times in 319 Posts
Most cars are designed this way. A lot will go from 50km DTE to -- at once.

Some cars like my Fiat report actual fuel level that can be ready via OBD. It's nice to know the exact % of fuel in the tank (which I've found to be quite accurate), but they don't want joe public to have that info and always refuel at 1% remaining.
__________________






  Reply With Quote
Old 03-24-2019, 01:19 PM   #3 (permalink)
EcoModding Lurker
 
Join Date: Feb 2016
Location: london uk
Posts: 4
Thanks: 0
Thanked 1 Time in 1 Post
Thanks for the reply.
Have you run the Fiat down to 0% and seen how far it will do " empty " ? The Fiesta managed several miles with 0 to empty !
  Reply With Quote
Old 03-24-2019, 04:48 PM   #4 (permalink)
EcoModding Lurker
 
Join Date: Jun 2018
Location: Liverpool
Posts: 34
Thanks: 0
Thanked 8 Times in 7 Posts
Turtle

I have a 2007 fiesta, which is of course much older, but I would imagine the ecu etc probably uses the same calculations or whatever.

The distance to empty is pretty accurate - with a few caveats.

The fuel sensor/ecu will quickly respond to a perceived drop in fuel level, but take much longer to respond to an increase. Example - driving along on a straight road DTE reads x, come to a roundabout the fuel sloshes around and the DTE starts to plumit. Stays low for the rest of the journey, but park up and come back half an hour later and DTE has jumped back up again.

I regularly drive on almost empty to save weight, and when this low on fuel even filling up at the pump it won't update until the ecu has been to sleep and reawoken.

Once I got cocky - car had been sitting overnight on level ground (very important!) showed a genuine 2 miles to empty. Cheapest fuel was 4 miles away - no bother, these things are always over cautious anyway... the last mile was walked with a jerry can in hand

As long as I start my journey with enough miles to go showing, I know I'll be good.
  Reply With Quote
Old 03-25-2019, 02:49 PM   #5 (permalink)
Just cruisin’ along
 
jcp123's Avatar
 
Join Date: Jul 2009
Location: Rochester, NY
Posts: 1,183

Beater Echo - '00 Toyota Echo
90 day: 42.67 mpg (US)

Hondizzle - '97 Honda Civic DX
Team Honda
90 day: 46.55 mpg (US)

Shaggin Waggin - '14 Chrysler Town + Country
90 day: 22.56 mpg (US)
Thanks: 66
Thanked 200 Times in 170 Posts
My wife's van is like this. I can see a fast decline in DTE when a hill causes fuel level readings to drop, and it recovers super slowly if the fuel reading increases again. It's a programming quirk, not necessarily a defect.
__________________



'97 Honda Civic DX Coupe 5MT - dead 2/23
'00 Echo - dead 2/17
'14 Chrysler Town + Country - My DD, for now
'67 Mustang Convertible - gone 1/17
  Reply With Quote
Old 03-25-2019, 06:38 PM   #6 (permalink)
Rat Racer
 
Fat Charlie's Avatar
 
Join Date: May 2011
Location: Route 16
Posts: 4,150

Al the Third, year four - '13 Honda Fit Base
Team Honda
90 day: 42.9 mpg (US)
Thanks: 1,784
Thanked 1,922 Times in 1,246 Posts
Quote:
Originally Posted by Nedlom View Post
As long as I start my journey with enough miles to go showing, I know I'll be good.
As long as the leg you have to take is one where you can meet or beat your tank average. My town is 680 feet above sea level and for a long time I worked at sea level. My morning run was above the tank average, and my evening run was below. Going home, DTE wasn't in my favor.

As to accuracy, as long as we keep using a bobber on a lever in a horizontal tank to measure, that is going to be one vague reading. I love my UG with its calculated level.

__________________

Quote:
Originally Posted by sheepdog44 View Post
Transmission type Efficiency
Manual neutral engine off.100% @MPG <----- Fun Fact.
Manual 1:1 gear ratio .......98%
CVT belt ............................88%
Automatic .........................86%

  Reply With Quote
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com