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Economy button.. 

 

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Posted: Thu Sep 20, 2007 9:33 pm 
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Changed my oxy sensor and put a can of wynns throttle body cleaner through it....
and reset the puter... economy now 9.2 p/100...
i know its only early days and it might take a week or 2 to get a accurate reading, but im impressed aready....
and its more responsive too!!

 

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 Post subject: Re: Economy switch dilemma!!
Posted: Thu Sep 20, 2007 9:36 pm 
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wsinclair wrote:
Hi Guys, reading your comments on the usefulness of the economy switch:

I have a Ford Fairmont EF 1994 model (straight petrol), currently the tripometer shows 13.2l/100km, and I'm not sure if that's good or not.

I have tried driving with the economy switch in both on and off positions, but this appears to make no appreciable difference. What I do notice though is that it shifts to 4th gear alot faster (when reaching 60km per hour) when it is off, as opposed to only going into 4th gear at 70km per hour when the economy is switched on.

Now, my logic tells me that the quicker it reaches 4th gear, the lower the revs fall, and the less petrol I'm using, but this could be flawed. I am no expert in this matter, and wondered if someone could explain 2 things:

1. The reason for the economy switch and when it should be used (i.e. not in city, only long road etc.) and

2. Any way I can get better fuel economy than I am currently getting...

Cheers

Dude what i have found is keep the button off unless you are on the highway or doing over 2000 rpm. Try changing the oxy sensor like me and put a can of throttle cleaner through it.... and watch what happens..
And its easy to change, takes 5 minutes...

 

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Posted: Thu Sep 20, 2007 11:42 pm 
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i use 'power' for city driving, as it seems to select gears at a better time and gives me a little bit more a punch for navigating traffic, and honestly i find it uses less fuel than economy in the city.

the only time i use economy is on interstate/long drives, where the car is set on cruise at 95-100km/hr for extended periods

 

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Posted: Fri Sep 21, 2007 10:49 am 
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thanks teveo, you mentioned the oxy sensor being on the exhaust, i'm no mechanic, so could you perhaps step me through it?
also, do i buy an oxy sensor new or 2nd hand, and what's the approximate cost?
cheers
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Posted: Fri Sep 21, 2007 11:01 am 
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teveo wrote:
Mine sits on 15.7 in economy, and 15.3, typical sydney driving...


Your lucky, my ef mont is lucky to better 17.5 at the moment and yes the oxy sensor has been replaced...... ever since ive fitted the cam its been like this. Highway driving is still great though at 9.
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 Post subject: trip
Posted: Fri Sep 21, 2007 11:30 am 
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ive got a 94 ef, with extractors and all that jazz.
my average l/100klms is at 8.9, thats both a mix of highway and city driving. at 100kph mine gets about 5.5 or 6l/100klms and at 120 its at about 8-9l/100klms.

so wether my cars a freak or theres just something plain wrong with it?

cos you guys are saying yours is like 13???

 

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Posted: Fri Sep 21, 2007 12:34 pm 
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yep, 13.2 to be exact, and i only travel about 20km per day, on a pretty straight and relatively unobstructive path (no real congestion) average speed about 70km/h, perhaps i need to check the oxy sensor...
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Posted: Fri Sep 21, 2007 4:49 pm 
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wsinclair wrote:
thanks teveo, you mentioned the oxy sensor being on the exhaust, i'm no mechanic, so could you perhaps step me through it?
also, do i buy an oxy sensor new or 2nd hand, and what's the approximate cost?
cheers


one of the sponsers of the site would be a good place to start. (Pimp the sponsors!) if not, efi_parts_australia on ebay is a good start. i got mine for $60 posted (thats pritty good)

the sensor is the only sensor that comes out of the exhaust. mines relocated so i cant tell you exactly where it is. but it comes out of the headers. just need an adjustable spanner to take it out. the sensor has two wires coming out of it. (i think) if not 2, 3 wires

 

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Posted: Fri Sep 21, 2007 7:42 pm 
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FordFairmont wrote:
teveo wrote:
Mine sits on 15.7 in economy, and 15.3, typical sydney driving...


Your lucky, my ef mont is lucky to better 17.5 at the moment and yes the oxy sensor has been replaced...... ever since ive fitted the cam its been like this. Highway driving is still great though at 9.

Remind me NOT to get that cam :shock: :D :D LOL

 

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Posted: Fri Sep 21, 2007 11:06 pm 
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wsinclair wrote:
thanks teveo, you mentioned the oxy sensor being on the exhaust, i'm no mechanic, so could you perhaps step me through it?
also, do i buy an oxy sensor new or 2nd hand, and what's the approximate cost?
cheers

Dude always buy brand new... they arent dear, i saw them on ebay for about $50. i got one from me parts guy.... anyhow... its just below your exhaust flange, from your exhaust manifold, you will see the exhaust pipe, and this thing with 3 wires sticking out if it, you cant miss it, if its a genuine ford one in it, it will have black and white wires. All you have to do is get ya spanner undo it, unplug it, than screw the new one in, plug it in.....
Make sure its tight, but dont over do it. I also undid my battery for a hour to reset the computer. Make sure you have the radio code!!! otherwise you wont be able to use the radio again!! Hook battery back up.
Also get a can of throttle body cleaner, take the pipe off the air box that goes to the throttle body, start the car...... find the throttle cable so you can rev it while you spray the cleaner down that pipe... you will have to give it a good reevvvin.. or it will stall when you spray.... if its a little hard to start after that dont worry... it will kick over and go back to its old self

Have a look at the tip of your old sensor, it will prolly be white and corodid....
The pic is a oxy sensor... its so basic......
Today i did a few k's, and the fuel has jumped up to 11.5 p/100 which is still better than 14....
I use only 98 octane, i also have a redline air filter, which might make it use more fuel too.. and im pretty heavy on the pedal to..
Hope this helps.... let me know what you get it up to, and remember it will prolly take a week to get a real accurate reading....

 

 

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 Post subject: Re: trip
Posted: Fri Sep 21, 2007 11:11 pm 
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EF-MattyB wrote:
ive got a 94 ef, with extractors and all that jazz.
my average l/100klms is at 8.9, thats both a mix of highway and city driving. at 100kph mine gets about 5.5 or 6l/100klms and at 120 its at about 8-9l/100klms.

so wether my cars a freak or theres just something plain wrong with it?

cos you guys are saying yours is like 13???


DUDE YOUR CAR IS A FREAK!!!!! THATS NICE ECONOMY!!
WHATS THE AVERAGE SPEED, MINES ABOUT 40

 

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Posted: Fri Sep 21, 2007 11:17 pm 
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wsinclair wrote:
yep, 13.2 to be exact, and i only travel about 20km per day, on a pretty straight and relatively unobstructive path (no real congestion) average speed about 70km/h, perhaps i need to check the oxy sensor...


ONE LAST THING DUDE... WHEN YOU GIVE IT A FLOGGIN, DO YOU GET A BIG PUFF OF BLACK SMOKE OUT THE BACK... THAT CAN BE A GIVE AWAY... TO A OXY SENSOR

 

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 Post subject: Re: trip
Posted: Sat Sep 22, 2007 12:55 am 
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EF-MattyB wrote:
at 100kph mine gets about 5.5 or 6l/100klms and at 120 its at about 8-9l/100klms.


um dont think so. Not unless your driving a Hyundai Excel.

Try filling the car up and work the km's off your trip meter, then when filling up again take note how many litres it took to fill and the size of the tank and work it out from there
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Posted: Sun Sep 30, 2007 1:01 am 
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Been to the dealer and they told me around town it can be worse in econ as it can labour at low revs actually using more fuel and reducing the life of the transmission.
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Posted: Sun Sep 30, 2007 3:27 am 
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ive noticed in my EA wjth ECO off the car picks up faster to say overtake but when slowing down for round abouts or speed humps my diff makes a slight clunking noise where as in ECO on the diff never clunks when slowing down hard. Also when i go up steep hills or have a car load once it starts to die in the a*** in ECO on i press the switch to POWER and it kicks down a gear then i switch it back and it changes back.
I leave mine in ECO on most of the time as i cruise but when im late for work (every morning) I use both.

 

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