The O2 sensor is basically an exhaust temprature gauge.  Connecting a
multimeter to your O2 sensor is a poor mans CO gauge.  You're right it is
just a transistor with a user adjustable gain (loss) - a pretty simple
device!

At 09:16 AM 15/01/2000 EST, kenneth d lewis wrote:
>David;
>        I have given this idea some thought. It should be a pretty simple
>circuit, a single,  adjustable gain, opamp to massage the output of the
>O2 sensor. Setting the gain below one should enrich the mixture and
>versa-visa. I would want to install some sort of device to let me know
>when I am starting to destroy the engine. Maybe an exhaust temperature
>gauge.
>
>Drive Safely & Good Luck
>Ken Lewis<Kernersville,NC>86 VW crewcab;60 356B Coupe
>For Sale: 61 AustinHealey Sprite(not Bugeye);Daily driver $2500
>
>On Fri, 14 Jan 2000 20:30:13 -0800 David Marshall
><vanagon@VOLKSWAGEN.ORG> writes:
>>I have been toying with the idea of making a black box that would
>>allow the
>>driver to control the mixture of the engine.  (If you are with the
>>EPA,
>>please hit delete!)

--   David Marshall -                    - Quesnel, BC, Canada   --
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