Gas Mileage
Brand new to the site as of this date. I recently bought a 96 F-150 that appears like it has never seen a winter. I am from the north so things get rusty quickly. My question is what is the best gas mileage I can expect with this truck. It has 59K miles and a 4.9L 5sp. with a 3.55 Checked it one time and got a shocking 11.25 miles per gallon. Very disappointing for the way it runs. I used to get close to 20 in my 78 F-150 with the 4 sp. OD. Is this normal or is something wrong. I also have a minor exhaust manifold leak but I don't think that is the cause. Any help would be greatly appreciated. Thanks:confused:
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Gas Mileage
Driving like a normal person and not a lead foot, you should be getting 15-18 city/hwy ...approx give or take. I got 14.5 on a trip to maine with 32" tires and a 6" lift, I was getting 16 or so before that.
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Gas Mileage
I do not have a lead foot and take it easy. I live in the country so it is almost all highway type driving. I don't lug the engine and shift to soon nor I wind the gears either. I do have a cap but it is cab high and also it is 2wd. 8ft bed and a regular cab if it helps.
I rarely go over 60. The tailpipe is a light grey so it is not running to rich. |
Gas Mileage
id do a complete tuneup, ignition coil, distributor cap, rotor, plugs, wires. check your tire pressure. check your converter too to see if its plugged.
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Gas Mileage
A major tune-up was done by a Ford dealer less than 14K miles ago. It seems to run to good for needing a tune-up, do you really think that might be the problem? Does the computor store up codes if prior problems were sensed? I don't or haven't had a check engine light since I have had it. I have only had it for going on 3 months and have not put 1K on it yet.
One thing that occured to me is with the slight exhaust leak could a knock senser be retarding my timing? |
Gas Mileage
Airfilter dirty?
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Gas Mileage
Thanks for the reply. Checked air filter and it looks like it was just changed.
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Gas Mileage
check for PCM trouble codes. You can pick up a tester at Autozone for 20 bucks or so.
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Gas Mileage
Your 96 has a mass air meter, which could be at fault. My dads 96 with a 351 went bad and was only getting 6-8mpg with no trouble codes, but black smoke on when on the gas pedel. I found that to be odd with a OBD-II computer.
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Gas Mileage
What does the inside of the tail pipe look like? If it is really sooty I would probably bet on it.
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Gas Mileage
I think if you look in your manual that Ford recommends changing the O2 sensor every 50K and since your entire engine performance revolves around it, might be worth $50 to try it.
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Gas Mileage
Tailpipe is a nice light grey in color. I will try the oxygen sensor route.
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Gas Mileage
Just got back from Crisfield Md. (Live near Baltimore). Truck has NEVER gotten over 14.5 before in any condition/load/speed.
Drove down Friday averaged 62mph/AC ON. 14.77 mpg Drove back sunday evening, same roads....NO AC averaged 53mph....15.6mpg Used the front tank for both ways. Larry |
Gas Mileage
Do you mean it has never gotten less than 14.5mpg?
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Gas Mileage
carb 300's seem to be better on gas than the EFI's. My 460 gets better mileage then my 300.
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