ZX3 ,, sudden drop in gas mileage ?? - 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 Tech Discussions > General Technical Chat

General Technical Chat This section is for technical discussions relating to general maintenance, electrical issues, engine trouble, and recalls.

Search This Forum | Image Search | Advanced Search    
FocusFanatics Merchandise

Thread Tools Display Modes
Prev Previous Post   Next Post Next
Old 08-16-2011, 08:22 AM   #1
Focus Enthusiast
Join Date: Mar 2008
Fan#: 54267
Location: Overthere, FL
What I Drive: 03 ZX3 5spd

Posts: 115
FF Reputation: 1 Esteban Good Standing Member
Buy-Sell-Trade Rating: (0)
ZX3 ,, sudden drop in gas mileage ??

I am mechanically inclined & have always kept my vehicles in great shape. I am older , so I drive like a Grandpa, & don't have any bad habits that affect mpg. No hills, [ Fl. ] , but A/C on a lot.
My 2003 ZX3, Zetec , 5 spd. , 52,000 miles , always got around 35 mpg [ combined ]. Then came 10% ethanol in gas & it dropped it to 32-33. The last 2 tankfuls I have seen it drop to 26mpg ! It runs pretty good but seems to have lost a little power & I notice a little skip, once in awhile while accelerating. NO codes are showing up at all.
It has 52,000 miles, & at 30,000 a new fuel filter was installed. Also ,new Autolite plugs & wires at 35,000. It has a new air filter, & PCV valve. PCV hose is good . Good quality fuel injector cleaner was added in the last tank as well as throttle body & MAF cleaned . Tire are inflated to 35psi. It idles fine .
This SUDDEN drop has me puzzled & I would like to see a return of better MPG. As I said,, no codes have shown up on OBD code reader.
Any help & tips will be appreciated.

Esteban is offline  
    Reply With Quote

Bookmarks & Social Networks

Quick Reply

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:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:


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

Forum Jump

All times are GMT -5. The time now is 06:36 AM.

Copyright 2002-2014 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 Audi S3, Ford Fusion and Acura TLX. You can find all Ford Focus and Focus ST related information here. Join our Ford Focus discussion forums and chat with local Focus enthusiasts in your area. Challenger Hellcat - Charger Hellcat