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Re: 1991 Buick Century 3.3L NOX Failure
Posted to Emissions Forum on 2/1/2007 12 Replies

Kelly

Most people believe that the correct tool to use to determine O2S health is a DSO. This is due to the very problem (slow data update) with scan tools, that you mention; and - that the DSO lets you see period duration and bias, voltage swings accurately... Login to read more.

12 Replies Received (View Replies)