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Old 01-29-2015
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Icon9 Gas Mileage

What can I do to improve the gas mileage on my 2001 Ranger - right now it really is the pits. Tryed replacing the plugs and wires, air and fuel cleaners now what?:
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Old 01-29-2015
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Clean the MAF.. I'm guessing by air and fuel cleaners you mean the filters? Might try running SeaFoam through it.. look on youtube how to do it. Also.. lay off the skinny pedal.
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Old 01-29-2015
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Yes filters is correct - Sea Foam used it - never - never rev my baby higher than I should - anything else to try?
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Old 01-29-2015
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91 octane fuels more or less do not contain ethanol , which results in horrendous fuel mileage

i only burn 91 octane fuel in my engine
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Old 01-29-2015
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Check your tire pressure, What kind of mileage are you getting?
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Old 01-29-2015
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Been using the same stuff since I got it - may try higher octane
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Old 01-29-2015
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new tires - pressure good - poor mileage was happening before the new tires.
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Old 01-29-2015
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Not throwing any codes?
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Old 01-29-2015
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his ranger is a 2001 model
the engine computer is not programmed to read burnt ethanol in the exhaust gases

the computer thinks the engine is running a little lean but will not activate any codes
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Old 01-29-2015
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What mileage are you getting?
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Old 01-29-2015
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How bad is it? I know my mileage during the winter months drops down a bit
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Old 01-29-2015
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Quote:
Originally Posted by redranger04g View Post
What mileage are you getting?
Quote:
Originally Posted by 00GreenRanger View Post
How bad is it? I know my mileage during the winter months drops down a bit
x3


also running a higher octane fuel wont do anything. the truck was born using regular and should continue to use regular (87). Unless re-flashed for running a different octane fuel, it shouldn't be changed.
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Old 01-29-2015
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Quote:
Originally Posted by 99offroadrngr View Post
x3


also running a higher octane fuel wont do anything. the truck was born using regular and should continue to use regular (87). Unless re-flashed for running a different octane fuel, it shouldn't be changed.
I gained a constant 1-2 MPG when using 91 octange
Edit: Oops my bad I read way too fast. I have a 91 tune, so yes he is right using higher octane won't do anything for you
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Old 01-30-2015
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Running 91 that doesn't have ethanol WILL increase mpg without retuning. But not enough to offset the added cost of 91. So its moot.

I'll ask again, what's your mpg currently? Hand calculated?
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Old 01-30-2015
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I remember the days of caring about gas mileage, and I don't miss them
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Old 01-30-2015
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Around 12 mpg - sucks - I was getting about 18 - 20 when I first got it
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Old 01-30-2015
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That's a big drop, I changed the fuel filter in my truck and went from 18 to 12, now I'm back up to 18
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Old 01-30-2015
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I will replace the fuel filter again and check my MAV - thank you to all the suggestions now my weekend is complete.
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Old 01-30-2015
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Wow, it's strange that a code isn't being thrown for such poor gas mileage. The only other thing that popped into my head was checking the Idle Air Control Valve or the O2 sensor; but you don't seem to have any problems with the Idle and you are not throwing any codes....Good Luck Man, we are here to help, keep us updated.
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Old 01-30-2015
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with his ranger being a 2001 model . i would go ahead and replace all of the 02 sensors

those sensors do deteriorate over time from the exhaust heat
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Old 01-30-2015
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I'll check the other stuff first than proceed to the sensors next if needed - thanx for the advise.
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Old 01-30-2015
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mileage

Can you clean an iac motor
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Old 01-30-2015
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what brand of spark plugs did you install

i would have replaced them with the motorcraft iridium 1`s

this is what i would do in sequence
1/ clean throttle body
2/ clean idle air controller ( port )
3/ replace spark plugs with motorcraft iridium 1`s
4 / replace all of the o2 sensors
5 / replace the ignition coil ( they do deteriorate over time from cycling and engine heat )
6 / fill up your fuel tank with 94 octane fuel and 2 cans of seafoam and run that through your engine

Last edited by cheese_man; 01-30-2015 at 09:07 PM.
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