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new oxy senser now my fuel consumption is worse 23.4l/100km! 

 

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 Post subject: new oxy senser now my fuel consumption is worse 23.4l/100km!
Posted: Tue Jun 06, 2006 4:08 pm 
Getting Side Ways
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Location: Rockhampton
QLD, Australia

ok 1st about my car
EF II xr6
2.5" exaust with pacemakers (4499)
k&n with SS inductions cold air intake
other than that pretty much standard

i normally get abou 17-18l/100km arround town shocking i know.
so i replace dteh oxy sensor witha brand new one of ebay universial ford 3 wire fittied stight in and had correct plug on it.
but my trip computer was reset but now im adveraging 23.4l/100km prolly done 10km only so far.

i deffinily tightened it up could it not be sitting right? or loose conection in connector?

do i need to give it tiem for my computer to adjust?????

2morrow im taking the k&n out and give it a clean (with the cleaning kit at work)

i alos have new spark plugs form ebay they are some tripple electrode ones but they are KLG brand are they any good?

any other ideas i have approval to start work on the car as long as consumptions stays no more than 18l/100km grrrrrr


oh just for an idea with cruise on going dwon amajor strret at 60km in 4th i was using as high as 14l/100km but generlly over 10


my idle is also a bit ifffy and jumps a bit maybe buy arround 100-200rpm at idle.
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Posted: Tue Jun 06, 2006 4:10 pm 
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Run diagnostics and see what the ECU has to say about it.

 

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Posted: Tue Jun 06, 2006 4:13 pm 
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yer mines crap to but mines a V8 but still any 1 out there got any advise

 

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Posted: Tue Jun 06, 2006 4:13 pm 
Getting Side Ways
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Ride: EF wagon & EF fairmont wagon & M

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VIC, Australia

yes definitely will take time to recalibrate. I would not trust new from ebay??? I got mine from a parts store and although it cost $80 it works great and a huge economy improvement
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Posted: Tue Jun 06, 2006 4:14 pm 
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i replaced mine and my fuel econ went from 22 to 16 but i do alot of short drives to work then home so the car doesnt get time to get out of warm up mode.
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Posted: Tue Jun 06, 2006 4:20 pm 
Getting Side Ways
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itr was new and fully sealed. from sun diseals i think his name was he sells heaps of them. my old one had a fair bit of carbon in it
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Posted: Tue Jun 06, 2006 5:52 pm 
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it would take at least 100km before u get a true average of ur economy. u might also want to reset the ECU so it can relearn but i dont think its necessary. but yeah once u drove 100km and ur fuel eco is still 22L/100km then i think ur old oxy sensor wasnt broken.

phong =P~

 

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Posted: Tue Jun 06, 2006 9:59 pm 
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You think that's bad I'm running on LPG on my series 2 EL XR8 opt 20, filled up today after doing 150 km of city driving and worked out that I had used 39 litres/100 :shock: . and no that's not a misprint. anyone have any advice to offer. Would desperately like to work out what is causing my high fuel consumption.
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Posted: Tue Jun 06, 2006 10:40 pm 
Getting Side Ways
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yeh, dont judge your fuel economy after 10km's..

reset it all take it to the limiter first drive and see how long it takes to come back down

 

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Posted: Wed Jun 07, 2006 10:55 pm 
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Agree, 10km isn't enough to get all back on track. Give it a while and you should see it come down.
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Posted: Sun Jun 11, 2006 9:44 pm 
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thats ok... i've got an EFI 351W in an ex-ambo.... gets 30L/100km most of the time... and pings it's ring off unless it's on 98RON....
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Posted: Sun Jun 11, 2006 9:51 pm 
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Should the computer be reset?

 

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Posted: Mon Jun 12, 2006 1:17 am 
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Andrew J wrote:
Should the computer be reset?


surely wouldnt hurt
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Posted: Wed Jun 14, 2006 12:39 pm 
Getting Side Ways
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QLD, Australia

would a leaking brakebooster effect my vacume and hense my fuel usage.

and yes i can see were the brake fluid has been leaking and eaten the paint ouch
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Posted: Wed Aug 16, 2006 5:45 pm 
Parts Gopher
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I have the exact same problem Ive changed the same gear as above now I get 300K to a 75L tank in an auto V8 ute where is the problem comming from.
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