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27 replies to this topic

#21 OFFLINE   Riden and a guiden

Riden and a guiden

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  • Region:U.S. Mississippi Valley
  • Location:Bloomdale
  • Edge's Year:2008

Posted 10 February 2017 - 11:27 PM

The computer finally straighten out on mine. It's only getting between 19 and 20 mpg. The computer is now also showing about the same.







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#22 OFFLINE   enigma-2

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  • Region:U.S. Great Lakes
  • Location:Indiana
  • Edge's Year:2009

Posted 18 February 2017 - 01:25 AM

Sorry to revive an old thread. Many of the op's stated that they were around 100k on mileage. One part that directly affects fuel economy and is subject to milage is the mass airflow sensor. Located just after the air cleaner, it consists of a fine wire element, exposed directly to all of the air entering the engine.
Over time (aka miles) it will accumulate a fine film of dirt over the wire. This, in turn will throw off the air flow reading to the computer and directly affect gas milage.
To clean it, you unplug the electricsl connector, then pop off the air cleaner housing and spray "mass airflow sensor cleaner" directly on the device. (Never touch the wire as it's very delicate). Use only a cleaner designed specifically for a mass airflow sensor, never anything else.
IE https://www.amazon.c... sensor cleaner

Follow directions on the can, don't get too close. Let dry and spray liberally again. Before reinstalling the housing containing the MAF let it dry completely.

High mileage isn't the only thing that affects the sensor. If your not using an OEM air filter, you may be allowing fine dirt to bypass the filter (a slight gap anywhere around the filter seal is sufficient) will cause the MAF to get coated faster. (Just can't beat Motorcraft filters).
It's especially true if your using an oiled air cleaner, as the oil will lightly coat the wire and throw off the sensor. If you use these, remember to clean the MAF regularly.
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#23 OFFLINE   Scriz

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Posted 12 September 2017 - 11:17 AM

I wish I got 20mpg.  I'll get roughly 23-24 on the highway, and 16 city.  My MPG on the dash reads 17.9 today after resetting it roughly 1000 miles ago.  I use low grade fuel in a relatively flat area and drive light footed.  Just recently changed sparkplugs to bosch iridium OE replacements, replaced air filter with OE replacement, and cleaned the MAF. 



#24 OFFLINE   WWWPerfA_ZN0W

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Posted 12 September 2017 - 05:56 PM

Have you run Techron Concentrate Plus through a couple of tanks of fuel?  Or BG 44K in a single tank?  I would do that closer to oil change time, even though it is said not needed.  Don't want that c*** in the oil for long.

 

Your mpg is very reasonable for the conditions stated.  It gets better at highway speeds the longer you drive, and your mpg shows that.  City/stopngo driving, cold weather startups, etc. KILL mpg.


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#25 OFFLINE   macbwt

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  • Region:U.S. Mississippi Valley
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  • Edge's Year:2011

Posted 14 September 2017 - 04:43 PM

Yep my wife is running about 15mpg in mombus mileage.


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#26 OFFLINE   enigma-2

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Posted 14 September 2017 - 08:00 PM

Daytrip today, running 75-100 mph and was getting 19-20 mpg. Normal city driving 14-15 mpg.
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#27 OFFLINE   Tightanium

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Posted 14 September 2017 - 09:47 PM

My 3.5 gets 17 city and 25 highway. Then there's my 3.5 Eco F150 , 14 city and 21 highway. Finally my daughter just got a 17 Escape 2.0 Eco. Only one month old to her. 19 city and 28 highway. My point here is this is 3 completely different size and weight of cars and the mileage reflects the more you weigh the less gas mileage you will get. Not like you didn't know this. But for comparison , 17 mpg for an Edge is pretty good. If you're a bit lower maybe you have a lead foot.
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#28 OFFLINE   akirby

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Posted 14 September 2017 - 10:58 PM

We get 19 in our 3.7 MKX with a mix of city and highway.
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