Deteriorating gas milage - Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum
Ford Focus Forum
HomeContact UsAbout UsGalleryDiscussion ForumsMarketplace


Go Back   Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum > Ford Focus Discussions > General Car Chat Lounge

General Car Chat Lounge Discussion Forum relating to nonspecific Ford Focus models, car purchasing, auto industry news and any car talk.

Search This Forum | Image Search | Advanced Search    
FocusFest FocusFanatics Merchandise

Reply




 
LinkBack Thread Tools Display Modes
Old 11-26-2007, 10:56 AM   #1
Focus Rookie
 
Join Date: Nov 2007
Fan#: 51821
Location: Halifax, Canada
What I Drive: 2001 SILVER GREY WAGON

Posts: 2
FF Reputation: 1 Maya Good Standing Member
Buy-Sell-Trade Rating: (0)
Deteriorating gas milage

Hello all,

My first post on this forum .
Anyway, we own a 2001 Focus wagon (2 L 16 valve). Over the past 2-3 months, the gas mileage has been gradually and steadily deteriorating, to the point where we only get 250 miles per tank (about 25% reduction!).
We have had no dash lights come on. I have changed the plugs and the filters, and am ready to change the O2 sensor if it can bring the mileage back to where it should be.

Any suggestions??

Thanks.

Jean-Marc


Maya is offline  
    Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 11-26-2007, 11:03 AM   #2
( o Y o )
 
BigRed03's Avatar
 
Join Date: Feb 2006
Fan#: 32177
Location: Ft. Laudy, Afghanistan
What I Drive: 2003 CD Silver ZX5 SVT

Posts: 5,549
FF Reputation: 9 BigRed03 Good Standing Member
Buy-Sell-Trade Rating: (4)
could also be because oil companies are switching to 10% ethanol (atleast they are here) and i have noticed a decrease in mileage.

you mentioned the filters, did you change the fuel filter? how about the plug wires?
__________________
BigRed03 is offline  
    Reply With Quote Quick reply to this message
Old 11-26-2007, 12:00 PM   #3
Focus Addict
 
nepafocus03's Avatar
 
Join Date: Dec 2006
Fan#: 42021
Location: pittston, pa
Posts: 1,035
FF Reputation: 1 nepafocus03 Good Standing Member
Buy-Sell-Trade Rating: (0)
my mileage has went down about 4 mpg too, ive heard that the oil companies use a different blend in the winter and it isnt as fuel efficient. i dont know how true that is though.
nepafocus03 is offline  
    Reply With Quote Quick reply to this message
Old 11-26-2007, 12:09 PM   #4
Focus Addict
 
MVent's Avatar
 
Join Date: Jan 2005
Fan#: 17635
Location: Moore, OK, United States
What I Drive: 2012 Focus Hatchback SE

Posts: 723
FF Reputation: 2 MVent Good Standing Member
Buy-Sell-Trade Rating: (1)
Quote:
Originally Posted by nepafocus03 View Post
ive heard that the oil companies use a different blend in the winter and it isnt as fuel efficient.
/\/\
Bingo.

The different fuel mixture really effects the fuel economy. When did the temps start getting near freezing in Canada? Thats usually when the mixture changes.
__________________
2003 Focus SVT - SOLD
2012 Focus SE Hatchback
MVent is offline  
    Reply With Quote Quick reply to this message
Old 11-26-2007, 04:29 PM   #5
Subcompact Fanatic
 
DURATECoftheDesert's Avatar
 
Join Date: Jan 2007
Fan#: 43017
Location: Somewhere, United States
What I Drive: 1997 Ford Aspire White

Posts: 2,175
FF Reputation: 9 DURATECoftheDesert Good Standing Member
Buy-Sell-Trade Rating: (0)
Quote:
Originally Posted by BigRed03 View Post
could also be because oil companies are switching to 10% ethanol (atleast they are here) and i have noticed a decrease in mileage.

you mentioned the filters, did you change the fuel filter? how about the plug wires?
Actually I did notice a 2mpg decrease.... Or it think that's just me.
In some cases theres really not much you can do with cars today since it's all controlled by the computer.

But putting brand new o2 sensor will bring it back up to par... no doubt.
__________________
Finally peace and quiet...
DURATECoftheDesert is offline  
    Reply With Quote Quick reply to this message
Old 11-27-2007, 09:55 AM   #6
Focus Rookie
 
Join Date: Nov 2007
Fan#: 51821
Location: Halifax, Canada
What I Drive: 2001 SILVER GREY WAGON

Posts: 2
FF Reputation: 1 Maya Good Standing Member
Buy-Sell-Trade Rating: (0)
Thank you all !
Appreciate your time.
I think I will try changing the sensor.
I let you know if I see any improvement (this sensor has 70K).
Maya is offline  
    Reply With Quote Quick reply to this message
Old 11-27-2007, 12:34 PM   #7
i wear no pants
 
besthaticouldo's Avatar
 
Join Date: Aug 2005
Fan#: 26970
Location: The Lou, MO
What I Drive: '11 OBP WRX Sedan

Posts: 17,503
Points 32,330, Level 100
Points: 32,330, Level: 100 Points: 32,330, Level: 100 Points: 32,330, Level: 100
Level Up 0% Completed
Level up: 0% Level up: 0% Level up: 0%
Forum Activity 1%
Activity: 1% Activity: 1% Activity: 1%
FF Reputation: 104 besthaticouldo Excellent Standing Member besthaticouldo Excellent Standing Member
Buy-Sell-Trade Rating: (23)
you need both sensors.

try that. clogged cat could kill mileage as well.

id do...
fuel filter
spark plugs
spark plug wires
air filter
oil change
tranny flush
o2 sensors
tire pressure and balance (affects way more then you think)
__________________
remember that building a car shouldn’t come from parts it should come from deep inside your soul. let the car speak for all the emotions, memories and experiences youve made and the car will take a life of its own. truth over fame.
besthaticouldo is offline  
    Reply With Quote Quick reply to this message
Old 11-27-2007, 09:28 PM   #8
Focus Enthusiast
 
bumblebee07's Avatar
 
Join Date: Jul 2007
Fan#: 48686
Location: Monroe, OH
What I Drive: 2007 Yellow ZX5, 1985 Corvette

Posts: 321
FF Reputation: 1 bumblebee07 Good Standing Member
Buy-Sell-Trade Rating: (0)
My gas mileage dropped when the MAF died on mine. But that showed the check engine light. I've noticed a decrease in my gas mileage too. The oil companies are doing everything they can to make more money, there is no reason for them to add ethanol
bumblebee07 is offline  
    Reply With Quote Quick reply to this message
Old 11-27-2007, 09:34 PM   #9
Focus Addict
 
MVent's Avatar
 
Join Date: Jan 2005
Fan#: 17635
Location: Moore, OK, United States
What I Drive: 2012 Focus Hatchback SE

Posts: 723
FF Reputation: 2 MVent Good Standing Member
Buy-Sell-Trade Rating: (1)
I think the ethanol is to help the gas burn easier and to keep it from freezing in extremely cold weather. I think thats what I remember someone telling me. I'm thinking it has too get pretty damn cold for gas to freeze though.
__________________
2003 Focus SVT - SOLD
2012 Focus SE Hatchback
MVent is offline  
    Reply With Quote Quick reply to this message
Old 11-27-2007, 09:42 PM   #10
Infidel
 
Brindfan's Avatar
 
Join Date: Jun 2007
Fan#: 48126
Location: High plains of....., CO
What I Drive: 2013 Ford Focus SE Hatch - Race Red

Posts: 3,284
Points 4,076, Level 40
Points: 4,076, Level: 40 Points: 4,076, Level: 40 Points: 4,076, Level: 40
Level Up 63% Completed
Level up: 63% Level up: 63% Level up: 63%
Forum Activity 4%
Activity: 4% Activity: 4% Activity: 4%
FF Reputation: 25 Brindfan Great Standing Member
Buy-Sell-Trade Rating: (3)
Quote:
Originally Posted by bumblebee07 View Post
My gas mileage dropped when the MAF died on mine. But that showed the check engine light. I've noticed a decrease in my gas mileage too. The oil companies are doing everything they can to make more money, there is no reason for them to add ethanol
They say by "oxygenating" the gasoline with ethanol, it reduces the air pollution. Of course, the biggest pusher of this idea is the mega-corporation Archer-Daniels Midland, the owner of corporate farms that grow about 70% of the U.S.A.'s corn crop.
__________________
"The only thing worse than a knee-jerk liberal is a knee-pad conservative." - Edward Abbey (1927-1989)
Hatch Nation#61 B.T.T.C.#3 ATX Faction#37 Rocky Mtn. Crew#3
Brindfan is offline  
    Reply With Quote Quick reply to this message
Reply

Bookmarks & Social Networks

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
What I Drive
Year, color, and model of your car. Example: 2003 Pitch Black ZX3
Name
Your real name.
City
State
Country
Insurance
Please select your insurance company (Optional)

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Gas strike whos_your_daddy General Car Chat Lounge 31 04-24-2006 01:05 AM
gas prices Silva_Bullet01 General Car Chat Lounge 13 04-20-2006 08:37 AM
gas milage focuzed1 ZETEC Performance (2000-2004) 0 04-17-2006 11:17 PM
time for new car... gas milage killin me Kicknzx3 General Car Chat Lounge 56 10-07-2005 10:10 PM
Extremely please/suprised with gas milage! 007 General Car Chat Lounge 39 06-13-2004 12:31 PM


All times are GMT -5. The time now is 05:28 PM.


Copyright 2002-2015 FocusFanatics.com. All Rights Reserved : Privacy Policy : Advertise Information

Focus Fanatics Ford Focus Forum offers many fun ways for you to engage with other Ford Focus Owners from across the world. Whether it be about the aftermarket performance modifications, technical how-to's, European tuned suspension or awesome fuel economy similar to the Mazda CX-3, Audi S3, Mazda MX-5 Miata and Acura TLX. You can find all Ford Focus, Focus ST and Focus RS related information here. Join our Ford Focus discussion forums and chat with local Focus enthusiasts in your area. If you own other makes have a look at Challenger Hellcat Forum, Charger Hellcat Forum, Cadillac ATS-V Forum, Cadillac ATS Forum, Cadillac CTS-V Forum, Lexus RC-F Forum, Lexus GS-F Forum, Mercedes GLA Forum, Mercedes GLE Forum, Civic Type-R Forum and Volvo XC90 Forum.





Search Engine Optimization by vBSEO 3.6.1