Why does my 150 only get 13 mpg when it used to get 17

Asked by Nov 19, 2014 at 09:35 PM about the 2005 Ford F-150 XLT SuperCab 4WD

Question type: Maintenance & Repair

2005 f150 4x4 5.4 120,000 with good driving habits. Could it have something to do with
the trans?

3 Answers

20,160

When's the last time it got a tune up? Air filter? Fuel filter?

100,395

Has your outside dropped below 34 degrees? if so the system has enriched the fuel mixture to compensate.or it is possible the some of your sensors are out of specs.

20,170

Depending on where you live refineries have to switch to a winter blend as a certain portion of the year. Maybe they haven't yet and the cold blast may affect your mileage. If everything is within specs try running a tank full of non-ethanol and see if it improves during cold weather.

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