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Brick lovers all,
I've seen a lot of info written on lambda sond aka oxygen sensors and some of it by Bosch, but this one on a four-wire model explains more than any others I've seen on installation and the care needed to provide reference air. Porkface has been looking for this for some years now to back up what he's told me about reference air being provided through the wiring, and now he's found it and shared it with me. I think some of you will be interested.
http://www.bosch.se/content/language1/downloads/Sensorkatalog_sidor_58_till_60.pdf
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Art Benstein near Baltimore
“The single biggest problem in communication is the illusion that it has taken place.” George Bernard Shaw
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