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#1
05-03-2005, 11:52 PM
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serves me right for bragging about mileage
My car used to get wonderful mileage. I used to get at least 30mpg pure highway (got about 35 mpg during most of my multistate roadtrip last spring) and 25-29 normal mix driving.
Now I cant break 27mpg on the highway and am getting about 20-23mpg with mixed driving. This decline started gradually last fall. Anyone have any ideas about why my car has gotten so hungry? The O2 and knock sensors are almost 2yrs old, just got my 180k service done. 
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#2
05-04-2005, 12:38 AM
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Yep, it serves you right!
__________________
. Earl .... ... .... ><SVX(*> Subaru Ambassador [COLOR=”silver”]1992 Tri Color L[/COLOR] ~45K (06/91) #2430 1992 Dark Teal LS-L ~184K (05/91) #0739 1992 Claret LS-L ~196K (05/91) #0831 1992 Pearl LS-L ~103K (06/91) #1680 1992 Pearl LS-L ~151K (06/91) #2229 1992 Dark Teal LS ~150K (07/91) #3098 (parts car) 1992 White LS-L ~139K (08/92) #6913 1993 25th AE ~98K (02/93) #164 1993 25th AE ~58K (02/93) #176 1993 25th AE ~107K (02/93) #215 1993 25th AE ~162K (02/93) #223 1994 Laguna Blue Pearl LSi ~124K (1/94) #2408 1994 Laguna Blue Pearl LSi ~144K (10/93) #1484 1994 Laguna Blue Pearl LSi ~68K (10/93) #1525 1994 Barcelona Red LSi ~46K (02/94) #2624 1994 Pearl LSi ~41K (12/93) #1961 1995 Bordeaux Pearl LSi ~70K (02/95) #855 1996 Polo Green LSi ~95K (03/96) #872 1997 Bordeaux Pearl LSi ~55K (08/96) #097 2003 Brilliant Red LS1 Convertible ~29K (04/03) #8951 1999 Magnetic Red LS1 Coupe ~33K (04/99) #6420 My Email | Old Locker | New Locker | Picture of 15 of the 19
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#3
05-04-2005, 03:59 PM
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My mileage hasn't changed at all.
Does your car still run/idle the same? Have you run any fuel "cleaners" lately? What about emissions?
__________________
David B. SVXipedia @ SVX-IW.COM -- SVX Information Warehouse 2.0 coming...eventually! Ebony 1992 SVX LS-L 5 spd Koni/GC Stebro 187k miles RIP (Rust In Pieces) 1993 SVX 5 spd Koni/GC Stebro Polyurethane bushings still available!
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#4
05-04-2005, 04:09 PM
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Quote:
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#5
05-04-2005, 04:41 PM
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Gee thanks for the help and sympathy.   Quote:
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#6
05-04-2005, 06:08 PM
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Right foot gaining weight?
Tire pressure and/or alignment? Transmission slipping (could actually be not that noticeable and still effect mileage)? -Bill
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Retired NASA Rocket Scientist Most famous NASA "Child" - OSIRIS-REx delivered samples from asteroid BENNU to Earth in Sept. 2023 Center Network Member #989 '92 Fully caged, 5 speed, waiting for its fully built EG33 '92 "Test Mule", 4:44 Auto, JDM 4:44 Rear Diff with Mech LSD, Tuned headers, Full one-off suspension '92(?) Laguna, 6 spd and other stuff (still at OT's place) My Locker
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#7
05-04-2005, 09:01 PM
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Her foot has gotten heavier in the last 6 months!
__________________
. Earl .... ... .... ><SVX(*> Subaru Ambassador [COLOR=”silver”]1992 Tri Color L[/COLOR] ~45K (06/91) #2430 1992 Dark Teal LS-L ~184K (05/91) #0739 1992 Claret LS-L ~196K (05/91) #0831 1992 Pearl LS-L ~103K (06/91) #1680 1992 Pearl LS-L ~151K (06/91) #2229 1992 Dark Teal LS ~150K (07/91) #3098 (parts car) 1992 White LS-L ~139K (08/92) #6913 1993 25th AE ~98K (02/93) #164 1993 25th AE ~58K (02/93) #176 1993 25th AE ~107K (02/93) #215 1993 25th AE ~162K (02/93) #223 1994 Laguna Blue Pearl LSi ~124K (1/94) #2408 1994 Laguna Blue Pearl LSi ~144K (10/93) #1484 1994 Laguna Blue Pearl LSi ~68K (10/93) #1525 1994 Barcelona Red LSi ~46K (02/94) #2624 1994 Pearl LSi ~41K (12/93) #1961 1995 Bordeaux Pearl LSi ~70K (02/95) #855 1996 Polo Green LSi ~95K (03/96) #872 1997 Bordeaux Pearl LSi ~55K (08/96) #097 2003 Brilliant Red LS1 Convertible ~29K (04/03) #8951 1999 Magnetic Red LS1 Coupe ~33K (04/99) #6420 My Email | Old Locker | New Locker | Picture of 15 of the 19
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#8
05-05-2005, 09:01 PM
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Driving style hasn't changed. Tires are a bit over a year old, I just inflated them a tad bit more, they're aligned. The tranny is a couple of months old. The problem is 6 months old.
I dont know if I'll even have gotten 20mpg this week. Is it getting worse? AAaaarrrrrgh! 
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#9
05-05-2005, 09:12 PM
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Quote:
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#10
05-05-2005, 09:26 PM
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My mileage used to be like 160 for a full tank.....i now get 210 or more! Dunno what caused that but im happy!
__________________
1993 25th Anniversary Edition # 156 of 301 ~ 121, 488 miles ( SOLD TO svxfiles 8/6/06) 2006 Subaru Impreza 2.5i....5spd - My daily driver2006 Subaru Legacy 2.5i -7k miles..Mom's daily driver 2,543 Member of the SVX World Network
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#11
05-06-2005, 03:01 PM
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Air temperature influences gas mileage. May or may not have anything to do with your problem, but it's something that people always overlook. It's one of the reasons gas mileage suffers in the cold winter months.
Dave
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#13
05-14-2005, 05:13 PM
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I would like to know what happened to your SVX. That is just so bad. I really feel for you man. I hope you get it fixed. Maybe everyone here can put their heads together and come up with the reason. I hope you find the problem and tell us about it cause I get 25mpg now and I want 32mpg.
 I have two thing that I want to clean. The EGR pipes and the primary air motor. Then again it could be the ECU.
__________________
May your transmission live forever. SuperbVehicleXtraordinary Proud sponsor of a 1992 SVX.
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#14
05-26-2005, 11:14 PM
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Temp's up to the 80s and mileage is down to 19mpg mixed.
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#15
05-27-2005, 08:43 AM
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Fuel pressure regulator? idle circuit partially clogged? vacuum hose leak? My best guess is that is a vacuum hose that split. As it split grows, gas mileage continues to fall. There are dozens of variables and as many possible causes. I'd start with a manifold vacuum test, then a fuel pressure test. Let us know how it goes. Doug
__________________
1992 LS Touring (6/91) - Currently undergoing a five speed swap Black over Claret with spoiler; 235,000 miles; Mods: 2002 Legacy 5 speed, ACT Pressure Plate, Excedy Clutch, Short Throw Shifter, Aussie Powerchip 1992 LS Touring (6/91) Black over Claret with 2.5" setback spoiler; 202,000 miles; Mods: B&M Cooler 1994 LSi (4/93) Bordeaux Pearl; 198,000 miles; Mods: Weight reduction. 1969 Mustang GT Convertible 1970 Mustang Convertible 2000 Ford Excursion Sola lingua bona est lingua mortua. My Locker
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