[Shotimes] Oxygen Sensor Question

[Paul Nimz]

I changed one on my '93 that was almost eroded away.  Made no difference in 
how it drove or the mileage I got.  Didn't get any codes from it either.

Paul Nimz
'97 TR
'93 EG mtx


----- Original Message ----- 
From: "George Fourchy" <krazgeo@comcast.net>
To: <shotimes@autox.team.net>
Sent: Sunday, November 21, 2004 9:26 AM
Subject: Re: [Shotimes] Oxygen Sensor Question


> On Sat, 20 Nov 2004 21:45:31 -0500, Leigh Smith wrote:
>
>>Has anyone ever had new O2 sensors change emissions or increase gas 
>>mileage?
>>Where the sensor had not obviously failed(codes)?
>
> I changed an O2 sensor on my '89 Turbo-coupe when the book said to, at 
> 85,000 miles.
> It made no difference in the way it drove or got fuel mileage.  It retired 
> at
> 200,000 with that second sensor in it, and got good mileage all the way to
> retirement.
>
> Lowrider went to 225,000 with its original sensors.  They never threw a 
> CEL.  As far
> as I know, there were no codes stored for them at all.  The symptom of 
> their failue
> was increasing poor fuel mileage in town, but the same (or close) good 
> mileage on
> the freeway.  The reasoning for this was the fact that when they wore out 
> they could
> not switch back and forth from sensing a rich mixture to a lean one fast 
> enough to
> adjust for the various power and throttle settings in a city environment. 
> On the
> freeway, there wasn't that much switching back and forth, so they could 
> keep up with
> events.  It would run rich in town, since rich mixtures couldn't be 
> detected quickly
> enough to adjust the mixture more lean.
>
> After the new sensors went in, it returned to getting decent mileage in 
> town, and
> highway economy got a little bit better....city--15 or less improved to 
> 20-22 (no
> hot-rodding, just commuting).  Highway improved from 24 to 28, using 
> cruise and
> traveling 300-400 miles between stops.
>
> George
>
> George
> _______________________________________________
> Shotimes mailing list
> Shotimes@autox.team.net
> http://www.team.net/mailman/listinfo/shotimes