RE: o2 sensor info

From: Mok, Alan (AMok@spbank.com)
Date: Fri Oct 23 1998 - 11:08:59 EDT


You'll need to buy a $1200 O2 sensor to get REAL accurate readings. Your
average O2 sensor is good enough to get you close but not enough to get
that last HP. Most dyno shops will have this device.

Alan

'98 Dakota R/T (Headers, FABM & waiting for Shift kit)
'89 Mustang GT (347, Griggs, S-trim...)
Ducati 916 (someday)

                -----Original Message-----
                From: Jon Steiger [mailto:stei0302@cs.fredonia.edu]
                Sent: Thursday, October 22, 1998 4:38 PM
                To: dakota-truck@buffnet.net
                Subject: RE: DML: o2 sensor info

                On Thu, 22 Oct 1998, Bridges, Bruce wrote:

> Jon,
> Check out Martin's posted web address
>
(www.eskimo.com/~dalus/bmw/all/engine/all_o2sensor.html) for the O2
> conversion data! A great tech discussion by SAE guys
on 02 sensor voltage
> as it relates to A/F as well as maintenance and
testing!

                   Doh! I'm an idiot. :-)

                  I've been reading so many O2 sensor pages lately that
I started
                reading this one and I thought it was one that I had
read previously
                so I went on to other things. I didn't check out the
discussion
                on the bottom. Thanks for pointing that out!!

                  For anyone who's interested, it appears as though the
air/fuel
                ratio cannot be determined by a normal O2 sensor, as
they are
                non-linear and generally not accurate enough.
Basically, they
                can tell lean/rich only. (> 450mv is rich, < 450mv is
lean).

                   There *are* O2 sensors which can be used to compute
the actual
                ratio, but they cost hundreds of dollars.

                  Oh well. :-(

                  (All that is stated at the very bottom, in the last
post,
                though there are great tidbits throughout the page.)

                                                              -Jon-

                  .--- stei0302@cs.fredonia.edu
----------------------------------------.
                  | Jon Steiger * AOPA, DoD, EAA, MP Race Team, NMA,
SPA, USUA * RP-SEL |
                  | '96 Dodge Dakota v8 SLT CC (14.58@93.55), '96
Kolb FireFly 447 |
                  `---------------------------
http://www.cs.fredonia.edu/~stei0302/ ---'



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