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Joined: Jul 2002
Posts: 89
CEG\'er
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OP
CEG\'er
Joined: Jul 2002
Posts: 89 |
Hi, I have a duratec and I am getting a bad mileage about 20-21 mpg with normal driving half in city and half in highway, I have just changed both upstream O2 sensors and the mileage increased a little but not so much, What can I do to improve it?,  Any ideas welcome, Tnx
1998 Contour
V6 2.5L ATX
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Joined: Sep 2002
Posts: 3,632
Hard-core CEG'er
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Hard-core CEG'er
Joined: Sep 2002
Posts: 3,632 |
Maybe a treatment of Techron or something like that. Also, quit driving so damn fast! 
"Cobb - It's not just for corn anymore!"
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Joined: Apr 2002
Posts: 1,361
Hard-core CEG\'er
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Hard-core CEG\'er
Joined: Apr 2002
Posts: 1,361 |
I was disappointed to find that I only pulled 25MPG on a freeway only trip in cruise control. I was going about 75-78MPH the whole tank of gas with no stops. I dropped in some Chevron fuel system cleaner for the trip back, and I drove it like a madman to make sure those secondaries got clean...only got 18MPG on the way back! Any help would be appreciated...she used to get almost 30MPG.
'98 SVT Contour, in at least 639 pieces 
4 Speed MTX...synchro and shift fork replacement in progress 
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Joined: Jul 2002
Posts: 89
CEG\'er
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OP
CEG\'er
Joined: Jul 2002
Posts: 89 |
1998 Contour
V6 2.5L ATX
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Joined: Sep 2002
Posts: 3,632
Hard-core CEG'er
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Hard-core CEG'er
Joined: Sep 2002
Posts: 3,632 |
75-78MPH is not a real efficient speed either. There is a reason the speed limit was 55MPH not so long ago.
I just put in Techron. MPG is going down. I think it will improve once the Techron works through the system. Looking for improvement on next fill up.
"Cobb - It's not just for corn anymore!"
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Joined: Sep 2002
Posts: 192
CEG\'er
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CEG\'er
Joined: Sep 2002
Posts: 192 |
Did you change the PLUGS
I found the front ones need changing early 0.70 on front bank after 56,000 miles !!!!
Just do the front if your mileage is similar
The rears were OK 0.63 !!!!
1999 GREEN Contour SE SPORT Duratec V6, ATX, SUNROOF, 93,000 Miles, P0420 ON&OFF -replaced DS O2 --did not FIX
*New TORQUE CONVERTER @ 53,000-Intermittent P1744
*New DASH at 53,000 and New DASH lifted-now using MOLLEY bolts to pull down
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Joined: Jul 2002
Posts: 89
CEG\'er
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OP
CEG\'er
Joined: Jul 2002
Posts: 89 |
Originally posted by contoured:
Did you change the PLUGS
I found the front ones need changing early 0.70 on front bank after 56,000 miles !!!!
Just do the front if your mileage is similar
The rears were OK 0.63 !!!!
Never changed the plugs, I just bought it like 4k miles ago and I do not know if the previous owners changed them, actually the last saturday I check one to see if there was any damage and they looked fine but with a very thin electrode, I'll try double platinum ... maybe this weekend. Any other ideas??
1998 Contour
V6 2.5L ATX
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Joined: Aug 2002
Posts: 1,228
Hard-core CEG\'er
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Hard-core CEG\'er
Joined: Aug 2002
Posts: 1,228 |
Tire pressure can affect mileage.
My name is Richard. I was a Contouraholic.
NOW: '02 Mazda B3000 Dual Sport, Black
BEFORE: '99 Contour SE Sport
Duratec ATX Spruce Green
PIAA 510's, Foglight MOD, K&N Drop-in
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Joined: Sep 2002
Posts: 3,627
Hard-core CEG'er
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Hard-core CEG'er
Joined: Sep 2002
Posts: 3,627 |
I get like 14 all the time. it sucks bad i think i need to change plugs though i might look into that
Trollin the boards as of 9/23
Originally posted by GS474:
stock hp is never enough
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Joined: May 2000
Posts: 857
Veteran CEG\'er
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Veteran CEG\'er
Joined: May 2000
Posts: 857 |
I second the plugs. My mpg jumped after I reinstalled stock Autolites after having Bosch +4s for 20k+ miles.
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