[s-cars] Fuel mileage questions

[Jason Butler]

As far as O2 sensor I get no black smoke that I can tell.  I do get a 
subtle surging when I am under boost.  It seems like it gets good boost 
then the ecu backs off just a little then lets the boost go again.  I have 
a 93 which doesn't have the little computer in the dash for avg mpg or 
boost ect...  And I haven't gotten a boost gauge in yet.

As for temperature it seems to be good.  I run right at the middle mark 
consistently.

I have looked at the air filer and it is very clean.  Although it is just a 
paper filter.

Have not checked fuel filter yet.

Jason

At 10:07 AM 3/4/2005, chris chambers wrote:
>Jason,
>
>Your mileage sounds low, I average 22+ mpg with my RS2 mods.
>Check and consider replacing your Air filter, Fuel filter and O2
>sensor.
>
>A bad O2 sensor can easily cause increased fuel consumption, this also
>normally include some amount of black smoke.
>
>Also I have read that a thermostat that has failed and is stuck open
>will keep the engine from warming up and can caue an increase in fuel
>consumption. Does your engine warm up fully?
>
>
>HTH
>Chris
>
>
>
>--- Jason Butler <jwbutler at wispertel.net> wrote:
> > I have owned my 93 S4 for 3 months now and am wondering what kind of
> > fuel
> > mileage is normal.  I have been getting around 18 mpg which includes
> > quite
> > a bit of city driving and about 40 miles a day of highway driving.
> > With
> > gas prices going up so much here in Denver I would like to maximize
> > my
> > mileage.  the S4 is completely stock with 180K miles on it.  Any
> > thoughts
> > on what will maximize mileage?  I don't drive it too hard because I
> > know
> > when you get into high boost it sucks gas.
> >
> > Thanks
> > Jason
> > 93 S4
> > 91 90 Quattro 20v
> > 90 Coupe Quattro (parting out)
> > 86 5ktq
> >
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>
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