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chris
Dodge Dakota
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3/13/2002
18:12:36
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 Subject: poor gas mileage
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to all 4.7 owners,
has anyone experienced a 2-3 mile per gallon loss, after addition of aftermarket parts? I have a cat back exhaust, airaid kit, IAT adjuster(although only turned on twice), and a home made intake pipe for the airaid quick fit system.
If anyone has any insight to this problem please reply!!!
thanks,
chris
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CW
GenIII
3/13/2002
20:16:37
|  RE: poor gas mileage
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Usualy it is the right foot enjoying the perf parts.
2001 RC 4.7 5sp 9.25" 3.92 LSD
Ported 68mm TB, IAT adjuster, 3" flowmaster cat back, TPS @ .76V, 4" cold air, Roadmaster active suspention, Removed Third cat, Electric fan Convertion, HO cams.
Working on adjustable fuel pressure with return.
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CThomp
Dodge Dakota
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3/13/2002
21:07:04
|  RE: poor gas mileage
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So far i've added only a 360airintake and I immediately noticed just over a 1mpg gain. That was at a constan 75mph. So at 55-60 constant on backroads i'm probably getting over 20mpg now. Not bad.
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BILL SHANHOLT
Dodge Dakota
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2/13/2004
14:47:01
| RE: poor gas mileage
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I HAVE A 2002 DODGE 1500 QUAD CAB. THE ENGINE IS THE 5.9 LITER (360 C. I.) AND GAS MILEAGE IS TERRIBLE. IT GET'S ABOUT 10 M.P.G. ANYWHERE, HIGHWAY OR IN-TOWN. ANY IDEAS OR SOLUTIONS TO HELP WITH THIS PROBLEM.
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Timberwolf
GenIII
2/13/2004
14:58:11
| RE: poor gas mileage
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Did you do these mods right at the onset of winter? Two things help to make my mileage fall from 13-14 mpg to 10-11 mpg in the winter. Number one is that they reformulate the fuel decrease emissions and number 2, I let it warm up longer. Otherwise, no those mods should make mileage a little better. Unless it's the happy foot that's doing it.
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mrman
Dodge Dakota
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2/15/2004
20:14:56
| RE: poor gas mileage
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It's got to be your right foot. I Installed a 9" powerstak filter, Z-tube, 68mm Fastman TB, Gibson shorty headers/single sweptside cat-back, and Autolite 3923 plugs on my '00 4.7L Dak. At first mileage went down while the computer was "relearning" after being reset. I was also mashing the gas quite frequently. Now, with a restrained right foot, the mileage matches the window sticker claim of 14mpg city. Most of my driving is city driving and when I can keep my foot out of the gas I can get around 15.4mpg around town. It's tough to keep from mashing the gas though because around 4000rpm(wot) that 4.7L sounds SWEET.
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eddy
Dodge Dakota
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2/15/2004
22:38:51
| RE: poor gas mileage
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4.7/5 speed auto/4wd Sport Plus. Bone stock. Consistent 12.5-12.9 all through winter, regardless of whether I drive like I did in college or like my grandmother. Still love the truck and accept the drawbacks, but that kind of mileage is comparable to 3/4 ton full sizers with much more capacity.
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01Motorsport
Dodge Dakota
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2/16/2004
08:48:17
| RE: poor gas mileage
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My overall city+hwy mpg is 18.5 with my '01 4.7 5-spd RC w/3:92. It has a homebrew alloy air intake with K&N drop-in, Flowmaster 70 2 1/2" duals cat-back, and Bosch Platinum plugs. I run 87 octane with about 4 gallons of 93 mixed in. Vehicle weight is a big factor in mpg. A Ram Quad-Cab with a 5.9 would be lucky to get 13 mpg at best. Good air in/ good air out is still a good bet for mpg AND hp.
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WipLash
R/T
2/16/2004
13:29:31
| RE: poor gas mileage
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01Motor,
Do you push that thing everywhere you go?J/K!
I just sold my 2002RC 4.7L auto. When I bought the thing new it would average 18.5mpg on the interstate driving 85mph. 16,000 miles later it wouldn't get 16mpg driving 75mph on the interstate. I even did a 300 mile stretch in TN on I40 at 95mph and got 17.5mpg when it had 4,000 miles on it. At 16,000 miles, if I drove over 80mph on the interstate it wouldn't even get 14.5mpg. City driving fell from 16mpg new to 14mpg @ 16,000 miles.
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Jeremy
Dodge Dakota
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2/17/2004
10:02:37
| RE: poor gas mileage
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I noticed that my mileage went down in the winter, most likely due to as someone stated before, the reformulated fuel now, and that I've been starting it and lettin it run for 10-15 min on real cold mornings. On a nice warm day in the winter, I got about 15 mpg, which is still below my 16-17 mpg in the summer. But, to hell with it, b/c it's February and it's almost springtime. 4.7L clubcab
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Major Woods
Dodge Dakota
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2/17/2004
13:12:10
| RE: poor gas mileage
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2002 QC 4.7 motor with 5 speed. I have a Flowmaster catback and K&N filter. 19.5/20mpg on the highway 70mph.
Still getting 15.5mpg when towing a 17' boat.
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eddy
Dodge Dakota
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2/17/2004
13:36:47
| RE: poor gas mileage
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Whoa, I just hit some kinda fluke. The weather warmed up for a week or so and I actually managed 14.5 overall.
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jeremiah2360
Dodge Dakota
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2/17/2004
18:18:18
| RE: poor gas mileage
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14.58 after 190 mile round trip to Foxwoods. Of course I was a lot lighter on the way back :)
03 qc 4.7 auto 4x4 26k
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Breadman
GenIII
2/18/2004
11:59:34
| RE: poor gas mileage
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Average 19.5 mpg on the way back from upstate NY.
Had my 6000 mile service done at the Jeep dealer down the street instead of at Dodge. Truck ran better than when I got it new. Couldn't believe the milage as I made this trip in Jan. and only got 18.5. Damn cold too -24 at night and +-0 during the day. Cranked her up Sunday morning and she was complaining. -20 degrees.
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fastdak
Dodge Dakota
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2/20/2004
00:49:13
| RE: poor gas mileage
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i get 17 in the city and 21-22 on the hwy. at 65-70 mph.
01 2wd 4.7l rc 5 spd. 3.92 lsd. dodge motorsports edition. the only mod i did to the motor was a k&n fipk. and my best time at the drag strip
is a 15.498 @88.60 mph. i don't baby it too much. 0nly 23,000 miles on it.
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01Motorsport
Dodge Dakota
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2/20/2004
22:15:13
| RE: poor gas mileage
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Message:
Hey, fastdak! I haven't seen you around here in awile. I pile the miles on my Motorsports Edition; 74K now. Just to clarify, I get 17-18 city and 19-20 highway. '01 4.7 5-spd 3:92 (identical to fastdak's).
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fastdak
Dodge Dakota
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2/21/2004
00:07:48
| RE: poor gas mileage
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hey 01, long time. how ya been ? i decided to keep the miles low so i can sell it at the barrett- jackson auction for big bucks ! lol heck one of 13 is got to be worth something, ya think ?
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Ramin
Dodge Dakota
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2/21/2004
00:32:26
| RE: poor gas mileage
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You guys got it lucky. I know a guy that has a 1500 quad cab w/ the 4.7 liter, and he gets 12.5-13.9 all the time. Even when he pulls his 4-horse trailer. Doesn't matter if it's Winter, Summer, whatever. He even gets that when he's only going 15-25 MPH pulling a haywagon over 40 miles one way! Loaded!
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rjrj
Dodge Dakota
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2/21/2004
23:20:42
| RE: poor gas mileage
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/
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WipLash
R/T
2/21/2004
23:51:01
| RE: poor gas mileage
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You all have it lucky! In the last 3 months my gas mileage has fallen of drastically. I was getting around 16mpg on the interstate at 75mph. Now I'm getting 12. Every time I put another tank of gas in it drops a little more. I thought maybe it was the weather being so cold, but we have had 2 weeks now in the upper 50's and lower 70's and it is steadily dropping. I really don't think anything is wrong with it. I think my problem and every one elses is the gas. For about a year now it seams like the quality of the gas has steadily gotten worse.
Any thoughts on this? Does anybody on this Forum work for a refinery?
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brainfart
Dodge Dakota
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2/22/2004
00:24:02
| RE: poor gas mileage
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hey whiplash, you got anything wrong w/ your truck, like maybe the fuel filter or something? I had an old Chevrolet Chevette a while back and the fuel milage just kept getting worse and worse, and a guy told me to change the fuel filter and the gas milage whent up alot. I don't think the Al Quada Terrorist Network Gas league overseas is f-ing w/ our oil that much, because, you know they know we'll kick their ass.
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