Re: Bad O2 sensor / high fuel consumption?

["Fred Munro" <munrof@isys.ca>]

Samir;

    This mileage seems a little low for highway use. If your car is in good
tune and compression is good, you may have a bad O2 sensor. Have you pulled
the codes from the ECU?

Fred Munro
'91 200q  280k km

----- Original Message -----
From: Samir Shah <gofast1@home.com>
To: Fred Munro <munrof@isys.ca>; quattro list <quattro@audifans.com>
Sent: Wednesday, August 25, 1999 10:01 AM
Subject: Re: Bad O2 sensor / high fuel consumption?


> I barely get 15 mpg. Any ideas? Bad injectors? Car passes emmissions,
> idle fine, no smells, etc. I do have a lead foot, but this is even
> during highway usage. Samir 89 200tqa.
>
> Fred Munro wrote:
> >
> > Hi Iain;
> >
> >     I average 30 miles per Imperial gallon (25 miles per U.S. gallon) in
> > mixed highway/city driving on my '91 200q. Mike's data will be in miles
per
> > U.S. gallon and would convert to 32.4 miles per Imp gal highway and
26.4 -
> > 27.6 miles per Imp gal town. Sounds like your wife's car is in the right
> > range for town driving.
> >
> > HTH
> >
> > Fred Munro
> > '91 200q  280k km
> >
> > ----- Original Message -----
> > From: Iain Atkinson (ETL) <iain.atkinson@etl.ericsson.se>
> > To: 'Michael Murphy' <mmurphy@nais.com>
> > Cc: <quattro@audifans.com>
> > Sent: Tuesday, August 24, 1999 6:26 AM
> > Subject: RE: Bad O2 sensor / high fuel consumption?
> >
> > > Hi Mike
> > >
> > > Thanks for the reply, looks like I am stuck with the fuel bill then.
> > Interesting to note that you can get 10w30 Mobil 1, I live in the UK and
all
> > I can get is 0w40 which is way too thin, I am sure other listers have
> > mentioned 15w40 or 50 as well.
> > >
> > > Regards
> > >
> > > Iain
> > >
> > > -----Original Message-----
> > > From: Michael Murphy [mailto:mmurphy@nais.com]
> > > Sent: 24 August 1999 11:15
> > > To: Iain Atkinson (ETL)
> > > Subject: Re: Bad O2 sensor / high fuel consumption?
> > >
> > > "Iain Atkinson (ETL)" wrote:
> > >
> > > > My wife's 100 2.0E Auto avant uses fuel at the rate of 26 to 27 mpg
no
> > matter what sort of driving. Is this about right for this car? Or am I
> > looking at a bad O2 sensor or bad cat, the car runs fine with no
problems
> > other than the small fortune it costs us to run the damn thing. Any
advice
> > or am I stuck with a big fuel bill.
> > >
> > > Iain,
> > > My 89 100 (2.3 NF engine w/auto) gets ~27mpg highway, ~22-23 around
town
> > > in the summer (15w50 oil).  In cooler weather, w/10w30 Mobil 1, it
gets
> > > ~30mpg highway, 26 in town.  That's w/a good OXS and a kitty that lost
> > > it's innards about 60K miles ago (still passes emissions inspection
> > > though).
> > >
> > > In the land of gas guzzling SUVs, the 100's mpg makes it a
> > > "tree-hugger".
> > > --
> > > Mike Murphy
> > >
>