[s-cars] RE:Was - Original Chips - Now - MPG

[Adam Cramer]

How can you tell if you have a bad thermostat or temp sensor?


On Apr 7, 2005 2:08 PM, Ned Ritchie <Q at intendedacceleration.com> wrote:
> Oxygen Sensors 101
> 
> "What Happens to Fuel With an Engine Miss?"
> 
> A little engine MISS will drive the oxygen content of the exhaust upward.
> 
> This is correctly detected by the O2 sensor, but an inappropriate conclusion
> of a TOO LEAN condition is reached.  The Computer lengthens the duration of
> the pulse of ALL the injectors to correct the SUPPOSED LEAN condition
> causing a RICH STUMBLE which may make another cylinder MISS with it's oxygen
> not burned going out the exhaust.  WHOA!  More oxygen!  The situation just
> gets worse.  More fuel is added.  VERY POOR MILEAGE!!!
> 
> Now throw in a defective temp sensor, thermostat, or a sluggish O2 sensor. .
> .
> 
> Ned Ritchie
> www.IntendedAcceleration.com
> 
> -----Original Message-----
> From: s-car-list-bounces at audifans.com
> [mailto:s-car-list-bounces at audifans.com] On Behalf Of Bill Clancy
> Sent: Wednesday, April 06, 2005 10:00 AM
> To: Abhijit Kondajji; s-car-list at audifans.com
> Subject: Re: [s-cars] Re: Was - Original Chips, Now - MPG
> 
> Hmmm
> I have known for a while that my thermostat is not working correctly.   But
> since I rarely need the heater I forget about it.    That must be part of my
> problem.
> 
> thanks for the reminder.
> -Bill
> 
> ----- Original Message -----
> From: "Abhijit Kondajji" <abhijitkondajji at gmail.com>
> To: <s-car-list at audifans.com>
> Sent: Wednesday, April 06, 2005 7:44 AM
> Subject: [s-cars] Re: Was - Original Chips, Now - MPG
> 
> I get about 24 MPG on the highway with intermixed 75 MPH/90 MPH
> driving. In the city, my daily work commute is 5 miles one way, in
> heavy stop and go traffic and I still get about 20 MPG. The car is on
> Mihnea Crack II chipset and is otherwise up to date on maintenance.
> 
> When I had a stuck open thermostat, the most I got was 13 MPG and a
> severe cold/sniffle from living in an Igloo (maybe it just resembled
> one inside).
> 
> Adding my 2 Rupees, which is $0.00002......
> 
> Regards,
> Abhijit
> 
> Date: Tue, 5 Apr 2005 21:58:19 -0400
> From: "Tom Mullane" <tmullane at snet.net>
> Subject: Re: RE: [s-cars] RE: Original Chips
> To: <s-car-list at audifans.com>
> Message-ID: <200504060159.j361xYYj028343 at ylpvm53.prodigy.net>
> Content-Type: text/plain;       charset="us-ascii"
> 
> Since this fuel thread is turning into a survey, I may as well weigh in.
> 
> My car gets somewhere around 10 mpg.
> 
> Due to this crazy FMIC project and the winter weather, the S lives in the
> garage most of the time.  When it does come out, it is usually only for a
> few hours of driving that would make Paul K look like my grandfather.  It
> also gets plenty of idling time.  Current status is immobile, but I have
> hopes.
> 
> I follow the same course with the Miata, but I can't seem to get less than
> 20 mpg out of that.  Maybe a chip....?
> 
> Tom
> 
> _______________________________________________
> S-CAR-List mailing list
> S-CAR-List at audifans.com
> http://www.audifans.com/mailman/listinfo/s-car-list
>