Thirsty F-150 Please Help!!
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Junior User
Joined: Nov 2004
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Thirsty F-150 Please Help!!
Hi Folks,
I'm a new member on this forum, just bought a real nice, but very thirsty, 93 F-150. It's a six cyl 4x4 XLT with all the bells and whistles. The problem is I'm getting about 8MPG. From what I've found here 10 is about average. The air filter and plugs are new, what else can I do to improve the milage? I do not lead foot it.
Are there any after market chips? They have them to improve performance, any to go in the other direction?
Thanks in advance!
I'm a new member on this forum, just bought a real nice, but very thirsty, 93 F-150. It's a six cyl 4x4 XLT with all the bells and whistles. The problem is I'm getting about 8MPG. From what I've found here 10 is about average. The air filter and plugs are new, what else can I do to improve the milage? I do not lead foot it.
Are there any after market chips? They have them to improve performance, any to go in the other direction?
Thanks in advance!
Elder User
Joined: Oct 2004
Posts: 984
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From: Winnipeg, Manitoba
Change all your fluids(diffs, t-case, trans, engine oil), add new wires, cap and rotor to the ignition, and see if that brings it up. Also check to make sure your brakes are not dragging, and maybe even go as far as re-packing the front wheel bearings. Lubrication is one of the biggest single contributors to poor fuel mileage, especially in a 4x4. Most people change the engine oil, but forget about the differentials, t-case and trans until there's a problem. May want to check the timing as well, and it never hurts to run a couple of jugs of injector/carb cleaner in with your next few gas fills either.
More Turbo
Joined: Apr 2003
Posts: 713
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Also make sure your cats are not plugged and a free flowing muffler would probley help..I average 16mpg with my 96 5.8L 4x4 excab..
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Post Fiend
Joined: Nov 2001
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From: Topsfield, MA
I've gotten 16 hwy on my F150 4x4 with 35" tires, 6" lift, 4.10 gearing, and a basically stock 302. My buddy's 96 F-150 I6 with about 60k miles, gets about 15 mpg city/hwy....8 is definitely bad.
You might want to do a compression test, you may have something internally wrong....
How long of an average did you take to arive at that 10mpg? I assume you know you need to measure mileage over a few tank fulls in order to get a decently accurate number....
You might want to do a compression test, you may have something internally wrong....
Originally Posted by Bullet-Nose
Thanks for the suggestions. Changed the air filter and fluids, corrected tire pressure, now getting 10MPG...still bad!
How long of an average did you take to arive at that 10mpg? I assume you know you need to measure mileage over a few tank fulls in order to get a decently accurate number....
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Compression check would be good, tune up, fluid and filter changes need to be done when due, check for codes and check fuel pressure. Big heavy vehicles do not get good mileage, don't expect too much. If you get in the 12-13mpg range overall you are probably doing pretty good. Load, altitude, weather, there are many factors that affect mileage.
Last edited by HardScrabble; Nov 27, 2004 at 10:23 AM.
Post Fiend
Joined: Nov 2001
Posts: 14,947
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From: Topsfield, MA
Originally Posted by Bullet-Nose
Oxygen sensor and codes are next on the list. I'm running a set of Michelen(sp?) ATVs. Maybe the aggressive tire thread is contributing to the poor milage.
Junior User
Joined: Nov 2004
Posts: 63
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i have a 1994 f150 with the 4.9 in it...i get around 11-13 in the city..never really taken it out on the highway much (just got it) i think it probily will make in the neighborhood of 16? just guessin.. i dont really care much, it is VERY reliable. by the way i have 32 inch tires all the way around and 3.55 gears...this truck can pull like crazy..so much tork for a 6 cyl...
Posting Guru
Joined: Nov 2004
Posts: 1,467
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From: N. Gwinnett Co. Georgia
Just wondering, manual or auto tranny? If manual check you clutch, pressure plate, t/o bearing adjustment. If auto and you've already changed your fliud and filter, try adding Slick 50 tranny treatement for high mileage vehicles. Also check the adjustment of your parking brakes, cables for bnding anywhere etc. Another thought: A friend of mine drives to work the same route I do everyday and he has a 300 six in his swb 2wd and was getting 9-10 mpg. (He abandoned a Dodge Ram for the Ford mostly due to gas mileage.) I average 12-14 mpg when running normally and I'm satisfied with that. I looked into his cab one morning and noticed the overdrive selector on the shift lever was lit. I reached in and pushed the button in the end of the lever and his gas mileage went to 14!
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