ive got a 99 4x4 with the 318. man ,this thing eats the gas up! the last time i filled it and reset the trip odometer i got only about 200 miles to that tank. can an o2 sensor cause this? im sure i need a tune up anyways but ive never heard of losing nearly 100 mpg from some bad plugs.

yes, o2 can cause this also platnum plugs i get 150 but been to cold to check my o2

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---Travis---
2002 Chevy Trailblazer LT 4.2
1996 Subaru SVX LSi AWD 3.3 L Flat 6 (Highway car)
1987 Grand Am 2.5 L Inline(Just keeps going and going...)
Can't forget the work van 04 3500 EXPRESS lol

I also have a 9 318 4x4. I also have get about 200 miles to the tank.

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99' Reg. cab Dakota 5.2 Auto 4x4
Go Rhino! bumper guard
3.55 gears
4 speed auto
flowtech headers
magnaflow replacement cat
magnaflow exhuast single in, dual out
custon intake
Oh yea, a worthless tb spacer

04' yamaha warrior 350 6 s

My truck isn't getting the best milage right now, but I just changed the spark plugs to NGK-V power. I used to get 200 miles per tankand even less. In the winter I only got 155 miles per tank.

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1999 Dakota 4x4 318
Flowmaster 40 Series
Crane TBS
Summit Racing Cap, Rotor, Wires
Accel Supercoil
CAI

Horsepower is how fast you hit the wall.
Torque is how far you push the wall.
-Unknown

jeez just keep out of it and u should do better, those sound like my low end winter numbers on my truck i usually get 230-250 between gas stations, but thats my truck idk maybe im nicer to mine than you are

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I don't no what else to do, but most of the time I drive city. I have 30 mile trips on the highway every week and that's it. Once it hits summer I will be able to squeeze out like 250 miles, but that is with the needle past the last white line.

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1999 Dakota 4x4 318
Flowmaster 40 Series
Crane TBS
Summit Racing Cap, Rotor, Wires
Accel Supercoil
CAI

Horsepower is how fast you hit the wall.
Torque is how far you push the wall.
-Unknown

Also a heavy foot can cause this

so what should i get in a 02 dak with a 4.7....?

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---Travis---
2002 Chevy Trailblazer LT 4.2
1996 Subaru SVX LSi AWD 3.3 L Flat 6 (Highway car)
1987 Grand Am 2.5 L Inline(Just keeps going and going...)
Can't forget the work van 04 3500 EXPRESS lol

that seems weird i get about 250-300 between stations in the summer and i dont run less than 1/4 tank ever

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I would say we get more miles because of the 2wd. I also have the 2wd 3.9 and during the summer I get 300 to 315 per tank and during the winter I get between 265 to 280.