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Tyler
Dodge Dakota
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11/11/2009
11:55:40
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 Subject: 02 Dodge Dak help
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I recently purchased a used 2002 dodge dakota clubcab with a 3.9L V6 with around 43k miles. It has been getting really low gas mileage for what it should be getting. Around 11 MPG in the last 3 full tanks. I dont drive with a lead foot so i know its not that. I havent had any codes thrown at me so im kinda clueless on what it could be.
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daddio
Dodge Dakota
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11/11/2009
12:01:01
| RE: 02 Dodge Dak help
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4x2 or 4x4? what is the state of tune? How about tire size, inflation and alignment? 11mpg highway, city or combined?
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Tyler
Dodge Dakota
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11/11/2009
12:07:12
| RE: 02 Dodge Dak help
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Its 2wd. Everything is stock and the tires are inflated to about 35 psi. And that 11mpg is all city.
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well
Dodge Dakota
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11/12/2009
16:49:16
| RE: 02 Dodge Dak help
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Hi Tyler
as daddio asked is it 2 wheel or 4 wheel drive?
and also automatic or standard?
& hate to say it but the weight of the truck with a V6 you will not get the mileage you expect with a V6
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daddio
Dodge Dakota
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11/12/2009
17:00:31
| RE: 02 Dodge Dak help
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Again I ask "what is the state of tune?" 2wd CC 3.9 auto should do better than 11 in town.
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Tyler
Dodge Dakota
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11/12/2009
18:36:57
| RE: 02 Dodge Dak help
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Im not sure i know what you mean when you say state of tune. I just bought this truck used so i have no clue whether the spark plus, rotor, dist cap, and whatnot have been replaced recently.
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Tyler
Dodge Dakota
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11/12/2009
18:53:00
| RE: 02 Dodge Dak help
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And to well, It is 2wd and an automatic transmission.
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daddio
Dodge Dakota
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11/12/2009
21:09:45
| RE: 02 Dodge Dak help
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"Im not sure i know what you mean when you say state of tune."
Exactly, start with a basic tune up and go from there. If you hadn't checked they may still have the original air filter. I've seen worse.
spark plugs, rotor, dist cap, wires air filter. Then see where you mileage goes.
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mario
Dodge Dakota
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11/13/2009
01:40:29
| RE: 02 Dodge Dak help
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43,000? not uncommon for some idiot not to change an air filter. my girlfriends moms expedition needed a filter change and she gained 3 mpg out of it...there was an entire bird stuck in it and it was completly clogged. it looked kinda like the inside of a vaccume filter...lol but try a basic tune...and even if it doesnt help to much then you at least know your truck has good ingnition components.
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Tyler
Dodge Dakota
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11/13/2009
23:55:01
| RE: 02 Dodge Dak help
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Alright, ill do all that. Thanks guys.
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mario
Dodge Dakota
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11/14/2009
03:28:57
| RE: 02 Dodge Dak help
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check your o2 sensors...sometimes things will fail but still be within operating peramiters....
if an o2 puts out between0.2 volts and2.0 volts yours could be putting out 1.9 causing it to run like crap but not throw a code...i made these numbers up but hopefully you get what im saying..let us know what you get after the tune.
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Tyler
Dodge Dakota
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11/14/2009
09:39:40
| RE: 02 Dodge Dak help
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Yeah i understand what your saying. Thanks.
I just bought this truck so im not fully familar with it but the haynes repair manual i just should have all this info in it right?
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mario
Dodge Dakota
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11/18/2009
00:45:34
| RE: 02 Dodge Dak help
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it should unless someone stole some pages..lol
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J and J Auto
GenII
11/28/2009
20:30:47
| RE: 02 Dodge Dak help
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The spark plugs are your window to how its running
they need to be a light tan sandy color or
something is wrong usualy o2 sensor but could
also be fuel pressure
these are the 2 most common probs that occure
It does not matter that it has low miles these
things can still be off
One other thing that happens in your year is a p;uged
or partialy pluged cat converter
Larry
J&J Auto
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