5.4 milage

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Jan 9, 2004 | 09:20 PM

jiminpa2

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Joined: Apr 2003

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From: nw pennslyvania

5.4 milage

well i'm up to 44'000 miles and no improvement on milage.10-11 is all she will do.i've tried a k&n filter system and amsoil 5-20 oil.keep the rpm's below 2000(if possible)as much as possible.drove to nebraska with the cabover on(est.1500 lbs) and got 8 mpg.any ideas,other than a new truck!

Jan 10, 2004 | 12:40 AM

65hoss

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Joined: Sep 2003

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From: Memphis, TN

Take it to the dealership and get them to check it out. Something may be wrong in the computer system.

Jan 10, 2004 | 01:17 AM

Bowcop

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Joined: Sep 2003

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From: Blaine Wa

my rig has the same mileage as yours on the odometer. I average about 11.5 to 12 driving around town. The best I have ever done was 16 and that was doing 5 below the speed limit. (65). Dont know what to tell you but that sounds about right to me.

Jan 10, 2004 | 05:24 AM

BigDawg54

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Joined: Aug 2003

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From: New York

i get around 12 mpg city and 16 mpg hwy. that was before my 285/75's we shall soon see how much i get then

. i can understand your 8 mpg with the cab over. i would guess closer to 10 mpg though. i am not an aggressive driver unless evoked

, so im very easy on my acceleration which is where i think most mpg is lost on hard take-offs. i try to keep my rpm's at or below 1800 from a stop(traffic light), yea it takes a while to get up there but i think its worth it, and probably save your tranny and drive componants from excessive wear and tear.

Last edited by BigDawg54; Jan 10, 2004 at 05:29 AM.

Jan 10, 2004 | 05:29 AM

klp

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Joined: Nov 2003

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From: Quincy, City of Presidents

I would say that is about right driving with the cabover. Mine gets about 12 unloaded and loaded with 1500 lbs of stuff... Around 12. I think the drag caused by the camper is killing your mileage. BTW, mine is a 99 5.4 2wd with 4.10's. KP

Jan 10, 2004 | 06:02 AM

DS02F250

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Joined: Nov 2002

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From: Ventura County, CA

I get 14mpg combined. Took a road trip during Xmas and got 16.4mpg. (my truck spec's below)...

I'd have it checked at the dealer or a reputable/certified mechanic's who KNOWS Ford computers and fuel delivery.

Have you checked the simple stuff like: changing fuel filter; tire inflation; is your tire size calibrated with your speedometer/odometer?; fuel injectors serviced? Sometimes we overlook the obvious (like me with the catsup on the refridgerator door: "honey, where's the catsup???" Doh!)