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troutarm
Dodge Dakota
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12/01/2002
10:38:12
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 Subject: 4.7 v8 gas mileage
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I have been getting an average of 12-13 mpg with my 4.7 in the city. The sticker says I should be averaging 16 mpg. Is there something that I should get checked out or is the the usual for this engine?
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Dragon
Dodge Dakota
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12/01/2002
11:57:04
|  RE: 4.7 v8 gas mileage
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I'm running about 14.5 highway, so that sounds close to right. I did have a week or two of 15.5 MPG but can't figure what I did right. Probably just didn't tromp the pedal on takeoffs.
From what I've read here there are a lot of mods you can make that increase MPG including new air intake and dual exhuast. Just look around for the posts.
Michael
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Andrew
Dodge Dakota
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12/01/2002
12:14:52
|  RE: 4.7 v8 gas mileage
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With my 2002 4x2 4.7 auto QC 3.55, I average around 15 mpg in the city. But, I'm pretty light on the pedal and live in a perfectly flat area of the country (Baton Rouge, LA). On the highway, I can average around 18-19 mpg at 75 mph. Heck, even on my recent vacation to Gatlinburg, TN, I averaged 15.5 for the whole trip pulling a small pop-up camper.
I wonder why I'm getting so much better mileage than either of you.
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b1llyw
DakotaEnthusiast
12/01/2002
12:41:32
| RE: 4.7 v8 gas mileage
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With my '02, I get about 13 around town, 14.5 highway. I've gotten as high as 16.5 highway on a good long run.
Bill White - 2002 QC 4x4, SLT , 4.7, 5 spd, 3.92 9.25, 1995 Dakota CC, 4x2, SLT, 318, 5 spd, 3.55 8.25
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gmackDAK
Dodge Dakota
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12/01/2002
14:32:50
| RE: 4.7 v8 gas mileage
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With my 2002 QC 4x4 Auto 4.7L I'm getting between 14-15 mpg, but I only have 4000 kms (approx 2500 miles) on it. I live in Vancouver, Canada so I'm either going uphill or downhill all the time:)
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Exocet
Dodge Dakota
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12/01/2002
16:25:18
| RE: 4.7 v8 gas mileage
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Here's what I've seen with my 02 QC 4x4, 4.7/auto/3.92. In mixed driving (50% highway/50% suburban) I'm averaging 13.7 MPG (slightly more in summer, slightly less in winter). Worst seen in mixed driving - 12.5 MPG. In straight highway driving it is between 15.6-16.0 MPG at 65-70 MPH. Best highway - 17.0 MPG at 55-60 MPH. Worst highway - 13.8 MPG at 65-70 MPH. I can't explain this last one other than it was cold and windy. This is the first vehicle I've owned that has not met or exceeded it's EPA mileage ratings in normal driving.
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mills
GenIII
12/01/2002
17:05:50
| RE: 4.7 v8 gas mileage
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my 2k gets about an average of 17 mpg's mixed conditions. i live in a suburban area and most of my driving is in what i would consider "city" conditions. i would say the best mod i did for gas mileage was the addition of a tonneau cover. my best ever highway mileage was 21.8. that was last christmas driving through the hills of missouri.
I'd go crazy if I cared!
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Justin LeChem
Dodge Dakota
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12/01/2002
18:32:30
| RE: 4.7 v8 gas mileage
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I have a problem with my Dodge Dakota. It is a 1998 Dakota Sport with the V8 5.9 engine and the 19 gallon tank and roughly 49,000 miles. Recently I was getting around 300 miles for a full tanl of gas. And now all of a sudden it has dropped to 200 and it seems to be getting worse. When I went to fill up the tank low and behold it only took 13 gallons to fill up. This made me think either something is wrong with my gass gauge or I might have a fuel pump going out. I have not noticed any loss in power,etc. She's running fine except for this. Any thoughts on what the problem might be?
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Jim n SC
Dodge Dakota
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12/01/2002
18:34:23
| RE: 4.7 v8 gas mileage
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2000 4.7L,CC, 4wd, 3.55, I justed bought this truck. I looked at the fuel computer and its averaging 15.2. Its been 6,000 miles since the computer was reset. Don't know the driving habits of the previous owner either.
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Dr. D
Dodge Dakota
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12/01/2002
22:03:10
| RE: 4.7 v8 gas mileage
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I replaced the stock air filter on a 2001 Dakota with a Amsoil TS-29 dual stage foam air filter (NO DIRT FLOWING K&N FOR ME) and filled the engine, transmission and differential with Amsoil Synthetics.
0w-30 in the engine, Synthetic ATF, and 75w-90 in the rear and I had a four mile per gallon increase in fuel economy (checked it three times).
Dr. D
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Dr. D
Dodge Dakota
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12/01/2002
22:09:11
| RE: 4.7 v8 gas mileage
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P.S.
I went from 15 to 19 m.p.g. with the above mods.
Dr. D
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Buggy-Bumpers
Dodge Dakota
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12/02/2002
05:31:15
|  RE: 4.7 v8 gas mileage
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That's pretty good MPG. I guess my Dak must be a lemon because I only get about 11MPG around town and about 15 MPG on the highway. When I went across country pulling a 4500lb trailer at about 70 MPH I averaged 6 MPG. I guess its time to shoot this truck and put it out of my misery.
01 QC SLT PLUS 4.7ltr LSD 3.92
HD TT FT4WD 4WABS Access Tanneau Cover
PIAA Fogs on Brush Bar, Better Built Step Bars
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Robbie
Dodge Dakota
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12/02/2002
05:52:45
|  RE: 4.7 v8 gas mileage
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I drove up to TN for Thanksgiving and got 16 cruising on 80. After my M1, 180 Thermo, 3923's, and X/L Turtle install I got 18 coming back down.
Robbie
'02 5.9 SLT Durango
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Texas Todd
Dodge Dakota
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12/02/2002
15:25:26
| RE: 4.7 v8 gas mileage
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NOt to be elitist, but the thread IS about 4.7's!!
Turkey week, trip from Houston to Ft. Smith Arkansas and back.
Now I have a QC, Leer shell on the bed, about 80lbs of padding for my wife and son to ride in the back some, another 250lbs of luggage, cooler with homebrew beer, etc. 9" diagonal TV/DVD (for my 2yr old) You get the picture, not the best for gas mileage.
Mostly highway, running 75-85mph, with an occassional stop light in a small town,
I got 20 MPG. No computer estimator here. The QC also comes with a 24 gal. tank!
01, 4.7, 5spd, Trailer towing and HD service pack, leer camper shell, tire and handling pack, two tone paint, fender flares, SLT with Infinity system.
engine mods: 180tstat, HOmebrew air intake with K7N drop in, AIT adj.-turned off, no viscous cluthch/belt fan, self ported 68mm TB, HO cams, Mobil 1 in engine.
Really, 20mpg, heavy truck, hauling a$$!
I was very happy!
By the way, I hope your posts are not from the overhead puter's, you have to divide to get the real MPG after a fill-up!
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lilbigrig
Dodge Dakota
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12/02/2002
18:44:07
| RE: 4.7 v8 gas mileage
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when my truck was new she pulled 16.5-17.5 average with some aggressive driving. then at 28,000 mi the clutch fan went out and after service i get 14.5-15.5 avg. driving the same daily route in the same manner.... i'm afraid i was victim of the "death flash" and just didn't know it until it was too late........
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BAE984
Dodge Dakota
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12/02/2002
19:45:07
| RE: 4.7 v8 gas mileage
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I get about 17 city and close to 20 highway (75-80 mph interstate) most of the time (gettin on it hard 2-3 times a tank). If I stomp it it's bad. Don't know how bad, just bad.
2000 QC 4.7 5sp 3.55 LSD
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stuarth
Dodge Dakota
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12/02/2002
23:24:25
| RE: 4.7 v8 gas mileage
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Around town I average 14.5 to 15.0 mpg ACCORDING to the overhead computer. I have not calculated it since the frist 3 months of having it.
On a San Antonio run, Columbus run, and College Station run, I can pull about 19 mpg ACCORDING to the real time overhead reading.
My truck is a 2000 Dakota Club Cab 4.7L Auto 3.55 riding on 275/55R17 Nitto's. I also have about 43,000 miles on it.
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Ian
Dodge Dakota
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12/03/2002
00:40:19
| RE: 4.7 v8 gas mileage
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Hey Texas Todd...did you feel much of a gain from the ported tb, I was considering this but wasn't sure if it wa worth the trouble?
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Texas Todd
Dodge Dakota
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12/03/2002
08:33:37
| RE: 4.7 v8 gas mileage
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Ian,
I didn't expect to 'feel' any gain from the TB porting. I think something this sutle would have to be proven before and after on a dyno.
I took a dremel and removed the 'hump' at the bottom of the TB, and took some off the edges also. The stock 68mm TB, if you look closely, definitely has some minor restriction going to the butterfly valve.
There have been many posts on this, and some say that without enlarging the valve it doesn't matter. I think it does, by letting more volume get to the valve. Look at your TB from the outside, you'll see what I mean.
Now I could say how 'oh, I really felt the increased power', and I probably have, but just like most of these minor mods, it didn't snap my head back. I definitely feel more low end torque from my HO cams though, added ~1yr after the TB porting.
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Demon Dakota
DakotaEnthusiast
12/03/2002
15:36:19
| RE: 4.7 v8 gas mileage
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I'd say the brush guard and full time 4WD is the main reason for your low economy. The 2WD Dak 4.7L's are supposed to be 15 MPG City/20 MPG HWY. There's no way a 4WD will get the same numbers with less aerodynamics (not that my truck has "great" aerodynamics anyway). I get 16.5-17 MPG City and 20-21 MPG HWY at high cruise speeds (80+ MPH). My mods are in my profile.
K&N Drop in AF
True Dual exhaust and removed third cat
HO Cams & HO Intake
Modified TB
Autolite 3923 Plugs
TPS @ .76 VDC
IAT Adjuster Mod
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Clinton
Dodge Dakota
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12/04/2002
20:39:16
| RE: 4.7 v8 gas mileage
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I have a 2001 RC 4.7L, 5 speed with a 3.92 rear. Average 18.5 mpg with 60/40 highway/city.
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Steve
Dodge Dakota
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12/06/2002
11:48:04
| RE: 4.7 v8 gas mileage
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those ratings don't mean $h!t. I got the same truck as Clinton, and i get the same mileage, thats on country roads.
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phatbrutha
Dodge Dakota
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12/06/2002
23:46:48
| RE: 4.7 v8 gas mileage
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I picked up an 02 QC 4.7 4x4 in June. After 5600 miles, I average 15.3 mpg. City driving, worst has been 10.8, and best was 15.3. Average is around 12. Best highway driving was 17.5 on a road trip to Vegas.
I don't think Chrysler products in general have good EPH. We have a 99 Town & Country that has been in for checks four times because of poor fuel consumption. That van has an average of 14.4 mpg (Dakota is better!) after only 27k miles (we got it new). Our avg city driving in the van is 14. Only once did we get over 20 mpg on the highway. Sticker for the van says 27 highway and 16 city. We never come close to 16 and are lucky to get it on the highway.
I'd like to try the amsoil fluid & filter swaps. According to the other post, looks pretty good.
RSW
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phatbrutha
Dodge Dakota
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12/07/2002
02:36:24
| RE: 4.7 v8 gas mileage
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All right, on that last post, EPH should have been MPG (I'm still in work mode).
Sorry about that.
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dakotajess01
Dodge Dakota
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12/08/2002
13:59:27
| RE: 4.7 v8 gas mileage
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i get 11mpg in town that sux, 01 4.7 QC, flowmaster 40 series deltaflow 2 chamber, k&n drop in, i was getting around 15 in town but that went to hell
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..well...
Dodge Dakota
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12/09/2002
09:10:02
| RE: 4.7 v8 gas mileage
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jess01,
some of your MPG went away with that flowmaster you put on, hopoe the new sound was worth the $$!
No doubt you have an auto, and some of it goes there as well.
Get rid of your belt fan and clutch, (search the posts), and lighten up on your foot some, that should come up some, (your MPG)
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Gary Ribble
Dodge Dakota
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7/15/2003
07:31:39
| RE: 4.7 v8 gas mileage
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I have a 2002 dodge dakota and get about 19 mpg city and 23mpg hwy. It is 2 wheel drive and I use high test gas with rating of 93 octane. Very happy with the truck
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jam0o0
Dodge Dakota
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7/15/2003
12:06:24
| RE: 4.7 v8 gas mileage
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i got a 02 quad cab 4.7 auto i get average 12 to 13 mpg in the city (houston TX) and about 17 mpg highway at 70 - 80. i got a k&n filter for it and use cheep gas. put the tail gate down on the high way and you will see a few mpg improvment
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JasonB
Dodge Dakota
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7/16/2003
12:03:29
| RE: 4.7 v8 gas mileage
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Want better fuel mileage? Drive like your grandparents.
lol
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modain
Dodge Dakota
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7/17/2003
04:36:22
| RE: 4.7 v8 gas mileage
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Would the PCM flash level have anything to do with the wide range of gas mileage people are experiencing? My truck has what looks to be an AB at the end of the PCM barcode/sticker part number. I get 16.5 with mixed driving and some heavy throttle every now and then. I get close to 20 if I drive the whole tank on the freeway without towing or going past 80mph.
I am happy.
-------------------
2002 Graphite SLT Plus, 4.7, 5-speed, 3.92 LSD, loads 'o fun...
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jester_dak
Dodge Dakota
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7/17/2003
18:27:27
| RE: 4.7 v8 gas mileage
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I'm pulling a steady 18.5 town and 21 highway with 87 octane.
BTW you'r trucks are tuned to run 87, you'll probably get better milage running that, I went from 15 to 18.5 with a change from 93 to 87.
'03 QC auto 4wd 3.55's... home ported TB, soft tonnau cover and 3923's.
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