Hole in my gas tank
Thread Starter
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Junior Member
Joined: Jul 2000
Posts: 3
Likes: 0
From: Duncanville, TX, USA
Hole in my gas tank
5.4 - F150 - 4x4 - SuperCab - 3.55 - 2000
I,m getting 12 mpg mixed & 13.5 Highway
I've got 4k miles
The dealership is telling me the computer has a breakin period and will change the performance and milage once it hits a certain point. Is this true or am I being feed a bunch of s_ _t. I know that 12mpg is not good wether I'm driving hard or not.
Thanks for your help!!!
I,m getting 12 mpg mixed & 13.5 Highway
I've got 4k miles
The dealership is telling me the computer has a breakin period and will change the performance and milage once it hits a certain point. Is this true or am I being feed a bunch of s_ _t. I know that 12mpg is not good wether I'm driving hard or not.
Thanks for your help!!!
Senior Member
Joined: Nov 1999
Posts: 1,751
Likes: 0
From: Waltham Ma.
jland
I think most of us have the same hole in the tank.
On the serious side my millage started to improve at about 5000 miles. I have the 4.6 when I first got it I got about 14mpg, I now am getting 17 mpg these are highway figures.
So if yours is anything like mine you should start improving soon, maybee to about 15-16 mpg.
Since I put the K&N fipk I got about a extra mpg, so I can get 18 mpg if I am carefull.
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1999 F150 4x4 4.6V8 regcab/shortbed
Oxford White with Wedgewood Blue two tone, with Blue Captains chairs
Bullet Cat Back, Superchip, K&N FIPK Intake.
Centerline Saber rims 17x8" with Firestone GTA 275/60hr-17 tires.
Alpine CDA-7845, ADS P640 Amp, Focal Poly Kevlar seperates.
[This message has been edited by Don C (edited 08-10-2000).]
I think most of us have the same hole in the tank.
On the serious side my millage started to improve at about 5000 miles. I have the 4.6 when I first got it I got about 14mpg, I now am getting 17 mpg these are highway figures.
So if yours is anything like mine you should start improving soon, maybee to about 15-16 mpg.
Since I put the K&N fipk I got about a extra mpg, so I can get 18 mpg if I am carefull.
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1999 F150 4x4 4.6V8 regcab/shortbed
Oxford White with Wedgewood Blue two tone, with Blue Captains chairs
Bullet Cat Back, Superchip, K&N FIPK Intake.
Centerline Saber rims 17x8" with Firestone GTA 275/60hr-17 tires.
Alpine CDA-7845, ADS P640 Amp, Focal Poly Kevlar seperates.
[This message has been edited by Don C (edited 08-10-2000).]
Senior Member
Joined: Jun 2000
Posts: 1,167
Likes: 0
From: Anchorage
Atleast you're not getting 11.3 city and 12.4 hwy like I am. And I have 20K miles on the truck.
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1999 F250 LD S/C XLT 4x4
5.4L, 3.73, 4R100 trans.
Flowmaster 40 series, K&N, Poweraid, Superchip, Rancho RSX shocks, Stull billet grille, 2-PIAA Pro80XT's (120W), 2-KC Daylighters (150W)
265/70 R17 BFG AT KO's on 17x8 American Racing Atlas rims
Kenwood 7000 CD, Alpine 3342 Signal Processor, Alpine MRV-F353 5Ch. Amp, Pioneer TS-A6865 3-way speakers, Lightning Audio 1 Farad Capacitor, RS10A Bazooka Bass Tube. CompuStar alarm/autostart.
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1999 F250 LD S/C XLT 4x4
5.4L, 3.73, 4R100 trans.
Flowmaster 40 series, K&N, Poweraid, Superchip, Rancho RSX shocks, Stull billet grille, 2-PIAA Pro80XT's (120W), 2-KC Daylighters (150W)
265/70 R17 BFG AT KO's on 17x8 American Racing Atlas rims
Kenwood 7000 CD, Alpine 3342 Signal Processor, Alpine MRV-F353 5Ch. Amp, Pioneer TS-A6865 3-way speakers, Lightning Audio 1 Farad Capacitor, RS10A Bazooka Bass Tube. CompuStar alarm/autostart.
Senior Member
Joined: Feb 1999
Posts: 461
Likes: 0
From: North Carolina
I was getting around 1...1mpg when I first got the truck. It was the worst, went on a trip 45 miles away and had to fill up on the way back. After about 5000 miles it got better. I now have 53000 and get about 15 in the city and 17 to 18 on the highway.
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The Truck: 1997 Black F-150 Flareside. Regular Cab ORP and Towing Package
The Mods: K&N Filter, Eurolid Hard Tonneau, Profile Windstream Side Deflectors and Lund X-Terminator Bug Deflector.
The Site:
Triton's 4.6 Liter Web Page
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The Truck: 1997 Black F-150 Flareside. Regular Cab ORP and Towing Package
The Mods: K&N Filter, Eurolid Hard Tonneau, Profile Windstream Side Deflectors and Lund X-Terminator Bug Deflector.
The Site:
Triton's 4.6 Liter Web Page
Member
Joined: Jun 2000
Posts: 69
Likes: 0
From: Russellville, AR
I have found that with the factory program that if you run anything other than 87 octange the gas mileage goes to crap (I run Texaco). I have a 2000 and right now I am getting 13-14 in town but that I believe is because of the heat. This past spring I was getting around 14 - 15 MPG in town and have drove my truck to Alabama this past winter and got 18 - 20 MPG on the highway. The truck is fairly new it just rolled over 10K and I got it in January. I don't know if this info will help you and your truck but I had a 97 with 4.2L and my 2000 and they both did about the same thing.
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2000 F-150 XLT, 5.4L, 3.55 Reg Axle
Regular Cab Shortbed 2WD
MODS
K&N FIPK
Kenwood CD and CD Changer
Kenwood Door Speakers
Flowmaster 40 Series Muffler (42541)
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2000 F-150 XLT, 5.4L, 3.55 Reg Axle
Regular Cab Shortbed 2WD
MODS
K&N FIPK
Kenwood CD and CD Changer
Kenwood Door Speakers
Flowmaster 40 Series Muffler (42541)
Senior Member
Joined: Jul 1999
Posts: 164
Likes: 0
From: Farmington Hills,Mi
Join the club
I get 12-14 all the time
every one else is about the same with that truck.
have 11,000 miles and have never noticed a break in period.
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99 XLT SC 4x4 STYLESIDE ORP 5.4,AUTO & 3.73 POSI
MED. TOREADOR RED
EXTANG TONEAU,BED MAT,
K&N FILTER & WOOD DASH KIT
I get 12-14 all the time
every one else is about the same with that truck.
have 11,000 miles and have never noticed a break in period.
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99 XLT SC 4x4 STYLESIDE ORP 5.4,AUTO & 3.73 POSI
MED. TOREADOR RED
EXTANG TONEAU,BED MAT,
K&N FILTER & WOOD DASH KIT