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why only 11mpg in 4.7?

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Old 03-29-2008, 02:30 PM
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Default why only 11mpg in 4.7?

hello
my 2001 dakota 4x4 gets 11mpg city 17hwy is that typical for a 4.7. i drive it like a baby 95% of the time and if i step on it it's only once not every time i drive. it has 83k with a auto tranny and my average mpg says 13.2
I have heard some 5.2 people say they get more than me when i have the newer engine. is there something electronic going on like a pcm update from chrysler or is this how the trucks really are? I have 31" tires and a flowmaster 40 series so very close to stock

THANKS
 
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Old 03-29-2008, 02:40 PM
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Default RE: why only 11mpg in 4.7?

idk i get 13.5 -14 in the winter 15-16 in summer(city) and over 20 on the highway something is wrong, but i dont know what maybe try replacing the O2 sensors
 
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Old 03-29-2008, 03:34 PM
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Default RE: why only 11mpg in 4.7?

ya i will have to take it to dodge for a PCM update and run some fuel cleaner thru the gas tank and see what that does
 
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Old 03-29-2008, 03:39 PM
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Default RE: why only 11mpg in 4.7?

before you spend money at your stealership try taking your o2 sensors out and cleaning them if you cannot afford to replace them, but i would just replace them
 
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Old 03-29-2008, 03:45 PM
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Default RE: why only 11mpg in 4.7?

where are the O2 sensors?
 
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Old 03-29-2008, 04:01 PM
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Default RE: why only 11mpg in 4.7?

on your exhaust...
 
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Old 03-29-2008, 05:29 PM
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Default RE: why only 11mpg in 4.7?

2004 4.7, I get 16 pretty steadily around town, and 20 highway. I noticed mine dropping around 30,000 miles, so I put new Champion plugs, K&N drop in air filter, and pcv valve, and it shot back up again ? My neighbor has a 2001 4.7. I'll have to ask him what he gets. All, they say tire pressure is real important to, I keep mine at 35 psi.
 
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Old 03-29-2008, 06:33 PM
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Default RE: why only 11mpg in 4.7?

ORIGINAL: shrpshtr325

before you spend money at your stealership try taking your o2 sensors out and cleaning them if you cannot afford to replace them, but i would just replace them
agreed. since it's not throwing codes. replace the O2's. cheap and simple

 
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Old 03-29-2008, 07:03 PM
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Default RE: why only 11mpg in 4.7?


I drive like an old lady. I don't accelerate over 2k rpm. Judiciously accelerate and decelerate to minimize braking. I average 17 - 18 mpg driving mostly on local roads and an occasional highway.
 
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Old 03-29-2008, 10:54 PM
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Default RE: why only 11mpg in 4.7?

CLEAN YOUR THROTTLE BODY, its the easiest cheapest thing u can do and u will notice a diff, i got 2 more mpg when i did mine, premiumgas will help 2 but who can afford it lol and a normal tune up plugs wiresl oil should be back up in the high 14'slow 15's
 


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