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daddio
Dodge Dakota
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2/04/2011
17:10:09
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 Subject: RE: 2001 dakota SLT v6 9mpg in city
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I don't think cleaninig the IAC will help with mileage but it wouldn't hurt. 9mpg is low and it smells like it's rich. Change the cap and rotor or do a complete new tune up then check mileage with a couple of tanks of gas. And while on the subject, how are you calculating fuel mileage?
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warren
Dodge Dakota
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2/04/2011
18:49:24
| RE: 2001 dakota SLT v6 9mpg in city
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Well I have a 17 gallon tank. Every quarter tank I only get 35
miles on the dot. Nothing more nothing less. I baby my
truck, and I don't have a lead foot. I tried letting it warm up
to save gas and I get the same if I drive it when its cold.
There are 4 quarter's and I only get 35 per quarter. 4 goes
into 35 about 9 times. So 9 mpg
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daddio
Dodge Dakota
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2/04/2011
20:49:24
| RE: 2001 dakota SLT v6 9mpg in city
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Your method of mileage calculations is wrong. Fill up, record mileage on the odometer. drive unitl at least hald of a tank then refill. Divide miles driven by gallons to refill. That is how you calculate MPG. Any other way is incorrect. Do that for a couple of tanks and then repost with your MPG.
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warren
Dodge Dakota
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2/04/2011
21:19:43
| RE: 2001 dakota SLT v6 9mpg in city
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Ok will do! I'll get back to ya
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Jeff Da Idiot
Dodge Dakota
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2/05/2011
01:45:53
| RE: 2001 dakota SLT v6 9mpg in city
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Here are the sensor voltages bro,
Throttle Pos Sensor aprox 5V when ignition is on
When truck is on, should read .35 and .9
Manifold Absolute Pressure Sensor 1.0-1.5V(make sure
rubber elbow isn't damaged)
Intake Air Temparature Sensor 5V
Engine Coolant Temp Sensor 5V
Crankshaft Position Sensor 5V
Camshaft Position Sensor 5V
Oxygen sensors will vary from 0.1-0.9V
Idle Air Control Valve(ur Rpms should be high or low or your
car won't start and Rpms should be at 600-700) clean it
though. If ya haven't cleaned it ever.
Replace ur PCV valve(it's like 5$) why not?
And check ur fuel pressure,
Fuel Pressure- 47-51psi
Fuel Inkector Resistance 10.8 to 13.2 ohms @68 degrees F
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warren
Dodge Dakota
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2/05/2011
10:04:06
| RE: 2001 dakota SLT v6 9mpg in city
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From the MAP sensor on are those
voltages for when the truck is running or
at idle?
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Jeff Da Idiot
Dodge Dakota
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2/05/2011
12:53:14
| RE: 2001 dakota SLT v6 9mpg in city
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No just turn the ignition on,
Test these while at idle, o2, iac and map.
The tps u have to test while at idle and wen ignition is on.
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warren
Dodge Dakota
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2/08/2011
16:30:44
| RE: 2001 dakota SLT v6 9mpg in city
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Message:
What spark plugs do you recommended for my 3.9l v6
dakota? i have crappy bosche plat's in them now.
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warren
Dodge Dakota
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2/08/2011
17:17:28
| RE: 2001 dakota SLT v6 9mpg in city
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should i get OE Champion copper plus? or NGK Vpower
plugs?
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Pete
Dodge Dakota
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2/08/2011
17:21:03
|  RE: 2001 dakota SLT v6 9mpg in city
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Message:
OEM nothing better everyone claims to have a favorite here
from 3923's to NGK FR5's to whatever nothing you will gain
in mileage. Good luck finding a plug that will give you better
MPG's all HYPE out there. And Iam not trying to be a know it
all or a smartass either which a few might think
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Jeff Da Idiot
Dodge Dakota
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2/08/2011
19:34:07
| RE: 2001 dakota SLT v6 9mpg in city
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Yezzir,
The NGK and the autolites seem to be the most best used
here on these post.
I used champions the platinum(they gave a good idle that's it)
but one of them were stripped and I went to get a new plug
and they gave me a double platinum and the idle was better
than the accel plugs!
The accel are crap(my idle is kinda rough and I have access
cap n rotor with wires!)
The Bosch werent so bad(in between)
I'm a use autolites next time.
I don't know which ones are the best but I would go with the
autolites 3923.
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warren
Dodge Dakota
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2/08/2011
22:47:02
| RE: 2001 dakota SLT v6 9mpg in city
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Message:
Well in these forms I have read many results on the 3923's.
Saying there good and saying there crap. So I'm prolly gona
go with the ngk's. What are the ngk FR5's tho I haven't found
those anywhere online. And how does all of the heat rating
stuff work?
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Jeff Da Idiot
Dodge Dakota
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2/09/2011
01:37:53
| RE: 2001 dakota SLT v6 9mpg in city
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Message:
They have em at autozone and pepboys.
I prefer pep boys.
The plugs are One heat range colder, if ur truck is pinging
there's a chance it will make it stop.
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warren
Dodge Dakota
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2/09/2011
10:46:51
| RE: 2001 dakota SLT v6 9mpg in city
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Message:
So the ngk fr5's are one heat
range colder? Or the autolites?
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Jeff Da Idiot
Dodge Dakota
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2/09/2011
12:06:30
| RE: 2001 dakota SLT v6 9mpg in city
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Message:
Both of em.
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warren
Dodge Dakota
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2/09/2011
17:10:50
| RE: 2001 dakota SLT v6 9mpg in city
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Message:
could i be getting such crappy gas mileage because i
have a 220 degree thermostat in my truck?
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Jeff Da Idiot
Dodge Dakota
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2/09/2011
17:24:32
| RE: 2001 dakota SLT v6 9mpg in city
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Message:
Holy sh*t!!! Stock is 195 degrees. Change it, and idk if that
would drop mpg. I'm running a 180 Jet thermo, but it's cause
I have mods on my truck. A SCT Tuner requires that.
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warren
Dodge Dakota
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2/09/2011
17:36:41
| RE: 2001 dakota SLT v6 9mpg in city
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Message:
well thats prolly is the culprit. what the
difference in getting a 180 stat, and a 195 stat?
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daddio
Dodge Dakota
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2/09/2011
17:50:41
| RE: 2001 dakota SLT v6 9mpg in city
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If you run a 180 deg tstat you run the risk of the engine not getting warm enough to go into closed loop and the PCM will think it is too cold and dump more fuel than necessary. Then your mileage will suck. Install a 195 tstat and be done with it. I have gotten uop to 24.5mpg on the hwy in a '00 QC 4x2, 5spd, 3.55:1 gears and 235/75/15 tires. Only mods, underdrive crank pulley, V8 TB, CPS mod. Average about 16-18 city.
With the 24 gallon tank I can get over 550 miles to a tank on the highway.
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Jeff Da Idiot
Dodge Dakota
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2/09/2011
17:57:45
| RE: 2001 dakota SLT v6 9mpg in city
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Message:
Yes Warren, it's better if u run the 195, I'm running a 180
cause of a superchip tuner I have on my truck. Have u
recorded any mpg's yet?
Daddio I have a 22 gallon tank. I guess it's cause u have a
quad cab.
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