Old member, new car(Subaru), bad mpg's - Fuelly Forums

Android Users - Coming Soon! - Migrating from aCar 4.8 to 5.0

Reply
 
Thread Tools Display Modes
 
Old 12-03-2007, 04:19 PM   #1
Registered Member
 
Join Date: Dec 2006
Posts: 36
Country: United States
Old member, new car(Subaru), bad mpg's

Well I sold my VX for something a little more winter friendly, and good thing as we had our first snow this morning. Not a good snow, but the road was slick enough going through one of the mountains. Well I got a 97 Subaru Impreza Outback wagon, it is "rated" at 29mpg, which I was desperately hoping to achieve, but after driving it about 3 weeks now, I can say the best I've gotten is 26mpg with all highway, but an average of only 23-25. I pumped the tires up, tuned it up, and still have yet to hit 29mpg. I know what kills some of my mpg is going up and down 2 mountains, twice a day, making for 4 pretty substantial "climbs" and obviously 4 decents(neutral, of course). I try to limit my speed and rpm's when going up, but other than that i'm at a loss as to why I can't hit at least the EPA rated goal. I was wondering if anyone has a recomendation for a MPG monitor? Its OBD2 so that has to help simplify it, I just don't know which to buy or from where. Also curious if anybody has had any experience with a similar car and can share there mpg's.. i hope i'm not the only one with this kind of bad mileage from these cars. I had a Yukon a few years back that I was able to get within 6-7mpg of what I'm getting from this car that is half it's size
__________________

GasSavers_NickF829 is offline   Reply With Quote
Old 12-03-2007, 05:02 PM   #2
FE nut
 
diamondlarry's Avatar
 
Join Date: Sep 2005
Posts: 1,020
Country: United States
Since the vehicle is a '97, a SG2 would be a choice for an mpg monitor. www.scanguage.com You can check for and clear trouble codes, monitor coolant and battery voltage, and several other parameters. Welcome to the site!
__________________

__________________
Horsepower is how hard you hit the wall, torque is how much of the wall you take with you.

2007 Prius,



Team Slow Burn
diamondlarry is offline   Reply With Quote
Old 12-03-2007, 06:16 PM   #3
Registered Member
 
brucepick's Avatar
 
Join Date: Feb 2007
Posts: 722
Country: United States
Location: Connecticut
A few thoughts...

Old EPA vs. new EPA. If you look it up now on the EPA site you will get the "revised" numbers. The older numbers were harder to achieve. http://www.fueleconomy.gov/feg/bymod...emodelNF.shtml

Maintenance items. Transmission fluid or lube changed? Oil changed, replaced with your preferred thinnest allowed oil? check the manual, if it offers your choice of several weights use the thinnest offered unless you have leak problems. Air filter changed? Differential/4wd lube changed? Not sure if that's the same as the tranny fluid or not on a Subaru.

Previous owners/mechanics might have had different ideas about lube, or maybe neglected that maintenance completely.

Marginally bad oxygen sensor? Should be pretty quick for a shop to check it with a voltmeter, or you can do it if you look up the how-to.
__________________
Currently getting +/- 50 mpg in fall weather. EPA is 31/39 so not too shabby. WAI, fuel cutoff switch, full belly pan, smooth wheel covers.

Now driving '97 Civic HX; tires ~ 50 psi. '89 Volvo 240 = semi-retired.
brucepick is offline   Reply With Quote
Old 12-03-2007, 07:21 PM   #4
Registered Member
 
DarbyWalters's Avatar
 
Join Date: Oct 2007
Posts: 376
Country: United States
20/27 manual ... 21/28 auto ... so you are within 1 or 2 highway and doing about right if they had a "combined" mpg

Cold weather...short trips...hills...all going to affect mpg

A grill block or block heater would probably go along way to up that mileage
__________________
2006 Jeep Liberty CRD...Founder of L.O.S.T.
OME 2.25" Lift w/ Toyo Open Country HTs 235/75/16s
ASFIR Alum Eng/Tranny/Transfercase/Fuel Skids
2002 Air Box Mod...Air Tabs (5) on Roof...(3)each behind rear windows
Partial Grill Block with Custom Air Scoop and 3" Open Catback Exhaust
Lambretta UNO150cc 4 Stroke Scooter



DarbyWalters is offline   Reply With Quote
Old 12-03-2007, 07:39 PM   #5
Registered Member
 
Join Date: Dec 2006
Posts: 36
Country: United States
yeah i checked that site out, 28 i guess doesn't make me feel so bad, but on my 120 mile round trip commute(sometimes upwards of 200, blah) i wish i could get more like 28+ mpg. i'm debating a grille block, i just don't know how to secure the board to the grille, and i don't want to overheat so i guess it would take some experimenting
GasSavers_NickF829 is offline   Reply With Quote
Old 12-03-2007, 08:41 PM   #6
Registered Member
 
GasSavers_Minger's Avatar
 
Join Date: Jul 2007
Posts: 98
Country: United States
Its winter, so you shouldn't worry about overheating, and if you get the scanguage, you can monitor the temperatures.

I used zipties and electrical tape for my grill blocks...electrical tape is holding a lot better than I thought
__________________

Quote:
Originally Posted by theclencher View Post
P.S. I must be a wierdo as I think just because a guy can afford to do something, doesn't mean he should. I can afford to buy 100 gallons of gas several times a month, pour it on the ground, light it (or not)... but I don't think I should.
GasSavers_Minger is offline   Reply With Quote
Old 12-04-2007, 11:30 AM   #7
Registered Member
 
kamesama980's Avatar
 
Join Date: Nov 2007
Posts: 742
Country: United States
Location: Columbus, IN, USA
Send a message via AIM to kamesama980 Send a message via Yahoo to kamesama980
I use zip ties. I use the little tiny ones, like 1/16" across. 3 of them on each plate behind my grill (so their actually in tension doing something too, not compression aka just pushed against the grill) so they'll hold.

What to make it out of: coroplast (political campaign sign material), cardboard, I have a couple aluminum plates that fit beautifully that I found in my garage.

in my experience (going 75-80 mph on I-80 through the Appellations) mountains have helped mileage, but that was also interstate so the grades are pretty tame (2 different cars, both directions, 3 tanks of gas each, 3 times) My theory is at least at that grade and speed, you save more gas going down than you use over normal going up...at that grade and speed. Either that or it's the Amish that live in that area.
__________________
-Russell
1991 Toyota Pickup 22R-E 2.4 I4/5 speed
1990 Toyota Cressida 7M-GE 3.0 I6/5-speed manual
mechanic, carpenter, stagehand, rigger, and know-it-all smartass
"You don't get to judge me for how I fix what you break"
kamesama980 is offline   Reply With Quote
Old 12-04-2007, 11:35 AM   #8
Registered Member
 
brucepick's Avatar
 
Join Date: Feb 2007
Posts: 722
Country: United States
Location: Connecticut
I think it's the Amish. They're quite thrifty.
__________________
Currently getting +/- 50 mpg in fall weather. EPA is 31/39 so not too shabby. WAI, fuel cutoff switch, full belly pan, smooth wheel covers.

Now driving '97 Civic HX; tires ~ 50 psi. '89 Volvo 240 = semi-retired.
brucepick is offline   Reply With Quote
Old 12-04-2007, 07:12 PM   #9
Registered Member
 
Join Date: Aug 2007
Posts: 14
Country: United States
As mentioned put some new lube in the tranny and rear differential.

Use regular recommended oil in the tranny(shared with front diff) because the synchros don't like synthetic.

However I would suggest putting synthetic in the rear diff.

Also take off the roof rack.

And i would suggest replacing the hood with one without a hoodscoop.
__________________

charlesB is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Partial Fuel-up Calculations Improvements ryogajyc Fuelly Web Support and Community News 16 04-17-2012 09:25 AM
Add Groups? ScoutTech Fuelly Web Support and Community News 3 03-17-2010 11:35 PM
Intake Air Temp resistor experiment. usedgeo Experiments, Modifications and DIY 82 07-17-2007 03:59 AM
$80 civic vx tranny in MN GasSavers_Ryland For Sale 0 05-15-2007 02:32 PM
parting out Honda d15b2 engine Matt Timion For Sale 0 06-27-2006 05:14 PM

Powered by vBadvanced CMPS v3.2.3


All times are GMT -8. The time now is 12:46 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.