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Old 08-20-2003, 01:02 PM
Kestas Kestas is offline
I told you so!
Join Date: Jun 2002
Location: Motor City, MI
Posts: 2,741
O2 sensors are mini power generators. They develop voltage at high heat depending on the amount of oxygen present.

The information I posted is transcribed nearly verbatim from a Wells book on testing sensors in a computer controlled vehicle. The book was written at least ten years ago and has a lot practical information for the DIYer.
95 E320 Cabriolet, 131K
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