gas milage
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Joined: Feb 2008
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gas milage
i need help if i change the front 02 sensors on my f150 7700 w/5.4 3.73 gears w/ auto will it help with gas milage. it has 107000. miles new plugs
use to get 12-13 mpg now its 7-8 mpg help help
thank you
use to get 12-13 mpg now its 7-8 mpg help help
thank you
Postmaster
Joined: Nov 2006
Posts: 4,517
Likes: 3
From: SE Wyoming
Well with a 50% drop it just may. Was this mileage drop in 1 tank or was it gradual? Do you have 100's if not 1000's of miles that are getting this new mileage or has it just been one tank? Did you do anything and then get this drop in mileage right after?
Tuned
Joined: Dec 1999
Posts: 464
Likes: 1
From: Bismarck USA
Before you go replacing sensors, you'll probably want to clean out your EGR ports. When those get clogged up, you start throwing codes. Codes state O2 sensor problem, but it may be because of faulty emissions system.
Do a search on EGR ports. You'll find tons of info. With 100k miles, I'd say that's more likely the problem. Or at least you'll need to make sure it's clean anyway, since 100k is about when many start acting up.
Do a search on EGR ports. You'll find tons of info. With 100k miles, I'd say that's more likely the problem. Or at least you'll need to make sure it's clean anyway, since 100k is about when many start acting up.
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