BOoya Member 118 Member For: 17y 8m 18d Location: Somewhere on the Open Highway, NT Posted 07/09/06 06:31 AM Share Posted 07/09/06 06:31 AM Just got the car back from Ford. Just to recap, I was getting 250km out of a tank, which lined up perfectly with the 20L/100k reading on the dash.Ford had a look, and apparently the ECU was programmed with the wrong tyre size - it was set to 19" wheels apparently which would have upset the odo. So far it is now showing a reduction from 20L to 17L, which still is sh*t, but is better. I'll give it a tank or so to re-learn the fuel maps (which were apparently also all reset) and see how it goes.←that's intresting!! - my car goes in for service tomorrow - ill ask them about this setting and make sure its set right for me too! Link to comment Share on other sites More sharing options...
JimmyXR6T04 Member 1,299 Member For: 18y 9m 30d Location: Canberra Posted 07/09/06 06:46 AM Share Posted 07/09/06 06:46 AM Just got the car back from Ford. Just to recap, I was getting 250km out of a tank, which lined up perfectly with the 20L/100k reading on the dash.Ford had a look, and apparently the ECU was programmed with the wrong tyre size - it was set to 19" wheels apparently which would have upset the odo. So far it is now showing a reduction from 20L to 17L, which still is sh*t, but is better. I'll give it a tank or so to re-learn the fuel maps (which were apparently also all reset) and see how it goes.←although it may have been wrong, I can't see how a setting about tyre size will affect actual fuel consumption might show up wrong on the avg fuel consumption etc, but it won't actually use more fuel. its been stated before, the only real way to measure it accurately, is to fill the car to the first click, and either drive it for 100km then re-fill to the first click again and see how many litres it used, or drive it till empty, re-fill and see how many litres it used to do how many kms. Doing this, I usually get about 12.5/13.5L. I just recently went on a long drive, and it was 10.5L and the avg fuel went down from 12.9 to 12.6. It might say you're only getting 250kms off a tank, but are you sure its filling up completely? My fuel guagehad an episode whereby it said I was on empty, however, when I filled the tank it only took 45L.. Link to comment Share on other sites More sharing options...
johng Member 43 Member For: 17y 8m 6d Posted 07/09/06 07:14 AM Share Posted 07/09/06 07:14 AM I had the same thoughts as you, but the issue with the tyre size is apparently that it affects the ODO, so I was actually doing more than the 250k the odo was showing me for each tank.But by my calc's it's only 10% anyway, so my 20L would drop to 18L which is still crap.So far it's returned to 20L anyway, so back it goes.I saw on the work sheet that the mech checked the AFR, does anyone know whether they actually would have a gas analyser, or if they just rely on the o2 sensor? Link to comment Share on other sites More sharing options...
johng Member 43 Member For: 17y 8m 6d Posted 07/09/06 07:30 AM Share Posted 07/09/06 07:30 AM Actually, thinking about it, if the computer thought I had 19" wheels, my fuel consumption is even worse... or is my maths backwards?? Link to comment Share on other sites More sharing options...
ROLMDL role model Member 1,111 Member For: 18y 1m 8d Gender: Male Location: Melbourne,S.E Posted 07/09/06 07:32 AM Share Posted 07/09/06 07:32 AM 14.7L / 100kms is what I had on the clock today pretty bad lol Link to comment Share on other sites More sharing options...
JimmyXR6T04 Member 1,299 Member For: 18y 9m 30d Location: Canberra Posted 07/09/06 07:39 AM Share Posted 07/09/06 07:39 AM I had the same thoughts as you, but the issue with the tyre size is apparently that it affects the ODO, so I was actually doing more than the 250k the odo was showing me for each tank.But by my calc's it's only 10% anyway, so my 20L would drop to 18L which is still crap.So far it's returned to 20L anyway, so back it goes.I saw on the work sheet that the mech checked the AFR, does anyone know whether they actually would have a gas analyser, or if they just rely on the o2 sensor?←another thing to consider is what kind of driving are you doing?? sorry if I missed it in a post elsewhere. If you're doing short trips here and there, then expect high fuel usage. Or if in stop/start traffic etc. Being in canberra, most of my driving is done around 80km/h and cruising. Link to comment Share on other sites More sharing options...
caspertt Donating Members 47 Member For: 18y 1m 22d Gender: Male Location: Toodyay, WA Posted 12/09/06 03:30 PM Share Posted 12/09/06 03:30 PM that sounds pretty bad, I fill mine up after floggin it around town and still get rated at 450+++ kms, and when I on the highway I would get around 600. mate up here has same prob he gets rated at 350 or so giving it prob less sh*t then I do.. seems odd but I dont complain←I think you underestimate how hard I drive.Caspertt Link to comment Share on other sites More sharing options...
JBomb3000 Donating Members 875 Member For: 18y 4m 29d Gender: Male Location: Victoria Posted 12/09/06 09:10 PM Share Posted 12/09/06 09:10 PM I just got back from a 600 odd k trip to Sandown and my stock 05 auto averaged excatly 10l/100kms←I assume that was the dash reading? Did you do the calc on the KMs and Litres? Interesting to know how close they were.←Did the calc on the last tank I put through. Trip computor reading 10.2L/100kms, calculation worked out at 9.75L/100kms Link to comment Share on other sites More sharing options...
PepeLePew Uncle Bulgaria was gender challenged Member 208 Member For: 19y 11m 30d Gender: Male Location: Gawler Posted 13/09/06 02:23 AM Share Posted 13/09/06 02:23 AM Never done a strictly country cruise in my BA T yet but I see 10.8 on the trip puter as my average. Actual is 10.6 measured, week in, week out. that's on Shell 95 crud.Switching to BP Ultimate again in the next week and try that for a few weeks. Link to comment Share on other sites More sharing options...
fordboy1981 Donating Members 2,075 Member For: 21y 3m 1d Gender: Male Location: Sydney, NSW Posted 09/11/06 12:46 AM Share Posted 09/11/06 12:46 AM well my T used to never drop below 18L/100km...yes, I drove with a heavy foot, but not all the time!I had it back to Ford several times and they said there was nothing wrong with it...was making good power too - 224rwkw, totally stock!Dave. Link to comment Share on other sites More sharing options...
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