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  #11  
Old   
Walt Kienzle
 
Posts: n/a

Default Re: Gas Consumption - 10-22-2006 , 11:47 AM






"Greg Farris" <farris (AT) nasa (DOT) org> wrote


Quote:
My own experience does not replicate these assertions.
Of the five Saabs I've owned, none has averaged 30MPG overall.
Using the on-board computer of my current 900TurboSE 2.0L (have no test
information to confirm its accuracy) the economy is very good (36MPG+) in
high
gear at 55MPH. Above this it goes lower (28MPG at 75MPH).

GF

Based on my experience on my 9000T, please be aware that dirty (blocked
orifice) fuel injectors will "trick" the on board computer to think you are
getting worse fuel economy than you actually are getting. This is in
addition to poorer fuel economy that dirty fuel injectors actually provide.
This is because the computer calculates fuel economy from the duration the
fuel injectors are open and assumes that fuel is flowing at the fuel
injector's specified rate. Fuel usage is not calculated from any device
that actually measures fuel flow.

When my car had 120K miles on it, I cleaned the fuel injectors. This likely
had never been done by the previous owner, nor had I done this before. From
then on, the on board computer indicated a 12% increase in fuel economy from
what it previously indicated. Fuel economy went from 25 mpg to 28 mpg.
Maybe I would get 30 mpg if I used Imperial gallons. ;-)

Walt Kienzle
1991 9000T




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  #12  
Old   
Junkyard Engineer
 
Posts: n/a

Default Re: Gas Consumption - 10-22-2006 , 01:55 PM





Greg, I should mention that for the 2006 9-3 Aero sport combi, not only you
get a 6th gear transmission but they also kicked off the real time
consumption on the computer. So the average consumption is based on a
certain amount of Km but can't say for sure how many. I ran also with
premium gas and the car has around 19,000Km. Usually, I drive mostly in
traffic and the consumption is around 12,5 L/Km.

When driving at 100 Km, the RPM is at 2,000 on the 6th gear.



"Greg Farris" <farris (AT) nasa (DOT) org> a écrit dans le message de news:
ehdrrp$1ebu$1 (AT) biggoron (DOT) nerim.net...
Quote:
In article <JAr_g.9048$484.6246 (AT) twister (DOT) nyroc.rr.com>,
krhodes (AT) nospam (DOT) maine.rr.com says...



I have found the same with my '00 9-5 V6t Wagon - I get better fuel
economy at
70-75 than I do at 50-55. I suspect that good aerodynamics, and tall
gearing
are the reason. The throttle is open wider, the turbo is able to recover
more
energy from the exhaust etc.. Every car has a particular "sweet spot"
where
you get maximum economy vs. speed, modern Saabs seem to have it a little
higher than most.



My own experience does not replicate these assertions.
Of the five Saabs I've owned, none has averaged 30MPG overall.
Using the on-board computer of my current 900TurboSE 2.0L (have no test
information to confirm its accuracy) the economy is very good (36MPG+) in
high
gear at 55MPH. Above this it goes lower (28MPG at 75MPH).

GF



Reply With Quote
  #13  
Old   
Junkyard Engineer
 
Posts: n/a

Default Re: Gas Consumption - 10-22-2006 , 01:55 PM


Greg, I should mention that for the 2006 9-3 Aero sport combi, not only you
get a 6th gear transmission but they also kicked off the real time
consumption on the computer. So the average consumption is based on a
certain amount of Km but can't say for sure how many. I ran also with
premium gas and the car has around 19,000Km. Usually, I drive mostly in
traffic and the consumption is around 12,5 L/Km.

When driving at 100 Km, the RPM is at 2,000 on the 6th gear.



"Greg Farris" <farris (AT) nasa (DOT) org> a écrit dans le message de news:
ehdrrp$1ebu$1 (AT) biggoron (DOT) nerim.net...
Quote:
In article <JAr_g.9048$484.6246 (AT) twister (DOT) nyroc.rr.com>,
krhodes (AT) nospam (DOT) maine.rr.com says...



I have found the same with my '00 9-5 V6t Wagon - I get better fuel
economy at
70-75 than I do at 50-55. I suspect that good aerodynamics, and tall
gearing
are the reason. The throttle is open wider, the turbo is able to recover
more
energy from the exhaust etc.. Every car has a particular "sweet spot"
where
you get maximum economy vs. speed, modern Saabs seem to have it a little
higher than most.



My own experience does not replicate these assertions.
Of the five Saabs I've owned, none has averaged 30MPG overall.
Using the on-board computer of my current 900TurboSE 2.0L (have no test
information to confirm its accuracy) the economy is very good (36MPG+) in
high
gear at 55MPH. Above this it goes lower (28MPG at 75MPH).

GF




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  #14  
Old   
darthpup
 
Posts: n/a

Default Re: Gasoline Consumption - 10-28-2006 , 08:45 AM


12.5L/Km. Are you out of your mind. What are you smoking?


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  #15  
Old   
Walt Kienzle
 
Posts: n/a

Default Re: Gasoline Consumption - 10-28-2006 , 12:11 PM



"darthpup" <amchitka (AT) mailexcite (DOT) com> wrote

Quote:
12.5L/Km. Are you out of your mind. What are you smoking?
Except for leaving out the "100" in 12.5L/100km, why is this an unreasonable
number when driving only in traffic?




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  #16  
Old   
Junkyard Engineer
 
Posts: n/a

Default Re: Gasoline Consumption - 10-28-2006 , 06:02 PM


Why, never drove a V6 2.8 Turbo in traffic before ?

btw it's 12.5 L/100 Km


"darthpup" <amchitka (AT) mailexcite (DOT) com> a écrit dans le message de news:
1162039506.137788.325750 (AT) m7g200...oglegroups.com...
Quote:
12.5L/Km. Are you out of your mind. What are you smoking?



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  #17  
Old   
Junkyard Engineer
 
Posts: n/a

Default Re: Gasoline Consumption - 10-28-2006 , 06:03 PM


Why, never drove a V6 2.8 Turbo in traffic before ?

btw it's 12.5 L/100 Km


"darthpup" <amchitka (AT) mailexcite (DOT) com> a écrit dans le message de news:
1162039506.137788.325750 (AT) m7g200...oglegroups.com...
Quote:
12.5L/Km. Are you out of your mind. What are you smoking?




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  #18  
Old   
solarsell
 
Posts: n/a

Default Re: Gas Consumption - 12-08-2006 , 01:24 PM


"Walt Kienzle" <wkienzle (AT) core (DOT) com> wrote

Quote:

Based on my experience on my 9000T, please be aware that dirty (blocked
orifice) fuel injectors will "trick" the on board computer to think you
are getting worse fuel economy than you actually are getting. This is in
addition to poorer fuel economy that dirty fuel injectors actually
provide. This is because the computer calculates fuel economy from the
duration the fuel injectors are open and assumes that fuel is flowing at
the fuel injector's specified rate. Fuel usage is not calculated from any
device that actually measures fuel flow.

When my car had 120K miles on it, I cleaned the fuel injectors. This
likely had never been done by the previous owner, nor had I done this
before. From then on, the on board computer indicated a 12% increase in
fuel economy from what it previously indicated. Fuel economy went from 25
mpg to 28 mpg. Maybe I would get 30 mpg if I used Imperial gallons. ;-)

Walt Kienzle
1991 9000T
How do you clean the fuel injectors? I dump some cleaner in the tank now and
then. Is that what you mean?




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