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Date:         Tue, 9 Jul 2002 18:20:44 -0400
Reply-To:     Ed McLean <email99@BELLSOUTH.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Ed McLean <email99@BELLSOUTH.NET>
Subject:      Generic O2 Sensors? - Are they really equivalent?
Content-Type: text/plain; charset=us-ascii

With all the talk about generic O2 sensors, maybe someone can answer something that has been puzzling me for quite a while.

Are O2 sensors calibrated to give different response curves?

How do we know that the Ford O2 sensor is the same calibration as the Vanagon sensor, only with a different plug? Maybe someone decided years ago that these two sensors look alike and so they must be the same, except for the wiring. Does anybody have any real data that indicates these are identical or at least similar in response?

Does anyone know of a reference for the performance calibration of O2 sensors? I've read many of the Bosch Fuel Injection books available and while they describe how FI systems use an asymmetrical oscillation pattern to shift mixture ratios, they don't address the differences in O2 sensors. Certainly with all the different part number O2 sensors produced, there must be differences other than the type of plugs or heaters.

Thanks, Ed McLean


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