Horrible fuel mileage - Page 4

Horrible fuel mileage

This is a discussion on Horrible fuel mileage within the F150 Ecoboost Problems forums, part of the F150 Ecoboost Forum category; I do pretty good with my 2.7 at 24mpg...

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Thread: Horrible fuel mileage

  1. #31
    Ecoboost Jr Member Victorfurtado's Avatar

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    I do pretty good with my 2.7 at 24mpg

  2. #32
    Ecoboost Veteran Mikedick77's Avatar

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    Quote Originally Posted by F150Rusher View Post

    Another short tip: plan your trips so your engine gets properly warmed up. Short hops KILL the 3.5's MPG. And if you're in a really cold clime, don't plan on getting more than perhaps 14.5-15 MPG during the winter.

    Jim
    For me, it's closer to 12.5 in the winter here in WI. Even with a block heater, and also a oil pan heater installed, I still end up with a 5-10 minute warmup in the morning before taking off. That 5-10 mins of running in the "rich cycle" going nowhere also puts a kill on your MPG's. You almost cant win that fight in the winter time unless you're rolling out of a heated facility for every drive.

    It really is a balance of what you want. Personally i'll pay. The ability to drive through whatever I want in the winter has a price tag on it that I dont mind. Doesn't hurt that 25 years ago I drove a 1980 Ford Thunderbird with a 302 4bbl and 4.11 rear. Drove that thing like Nascar everywhere I went, 45-55mph in Low 1. Point is i'm sure I dealt with much worse mpg in the name of fun, and what I wanted out of the vehicle.
    2013 Eco XTR 4x4 Super Crew 5.5 bed 3:31 Rear
    Stock, Weep hole, 160 degree T-Stat, Autolite Iridium XP5863 gapped properly, Castrol Magnatec 5w-30, and 93 octane
    NO OIL LEAKS!!

    Purrs like a kitten! It's called maintenence. This shouldn't surprise people.

  3. #33
    Ecoboost Sr Member Electrician33's Avatar

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    I live in New England and get about 14-15 in the winter and about 17 in the summer with my 13 4x4 screw. I have a pretty short commute about 8 miles. On the highway ive done as well as 24 but that was being really conservative. I have stock all season tires and no tuner. You have to remember that it is still a large 1/2 ton truck so its going to get truck like mpgs regardless of whats under the hood. The 5.0 screw i have at work gets about the same winter mpg.
    2013 F150 XLT Supercrew 4X4 300A Oxford White 3.5 Ecoboost 3.31 non locking, Weathertech floor liners, Back Rack

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  5. #34
    Rookie Steven Thompson's Avatar

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    Thank you for the info, i have heard about resetting ECM and I'm going to try that. I really like the truck, just was hoping to get better MPG. I can totally deal with the MPG, but would just like to approve upon it.

  6. #35
    Ecoboost Jr Member DDColorado's Avatar

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    Im getting bad mpg's now after getting great mpg for years. I used to get 20 mpg on the highway doing 75 mph at 6000' elevation. Now is only about 15-16 mpg. I tried the expensive KN filter and cleaned all the sensors on the intake, did nothing. I have 95k miles on the truck and it seems to run fine but poor mpgs this pass year. 12mpg city 15-16 highway.
    2012 Lariat 4X4 SuperCrew EcoBoost Max Tow Package 6.5 Bed Colorado Springs CO

  7. #36
    Ecoboost Veteran Mikedick77's Avatar

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    Quote Originally Posted by DDColorado View Post
    Im getting bad mpg's now after getting great mpg for years. I used to get 20 mpg on the highway doing 75 mph at 6000' elevation. Now is only about 15-16 mpg. I tried the expensive KN filter and cleaned all the sensors on the intake, did nothing. I have 95k miles on the truck and it seems to run fine but poor mpgs this pass year. 12mpg city 15-16 highway.
    And if you haven't changed your spark plugs every 25-30k miles on these engines, your MPG will hit the crapper quickly. That's no misprint on that mileage. Nobody is getting 50 or 100k miles out of spark plugs on these engines. If you're not sure when the last time was, i'd do it. The gaps on those decay like roadkill on a 105 degree day.
    milesej05 and Elmore328 like this.
    2013 Eco XTR 4x4 Super Crew 5.5 bed 3:31 Rear
    Stock, Weep hole, 160 degree T-Stat, Autolite Iridium XP5863 gapped properly, Castrol Magnatec 5w-30, and 93 octane
    NO OIL LEAKS!!

    Purrs like a kitten! It's called maintenence. This shouldn't surprise people.

  8. #37
    Ecoboost Jr Member DDColorado's Avatar

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    Thanks Mike, I change the plugs every 30k miles.
    Mikedick77 likes this.
    2012 Lariat 4X4 SuperCrew EcoBoost Max Tow Package 6.5 Bed Colorado Springs CO

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