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Re: No you can't use the O2 sensors to judge a cat
Posted to Emissions Forum on 1/18/2011 44 Replies

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yes , it does . it looks for 75% of the activity of the front 02 . newer cars are probably much tighter .

rudy's senario proves just that . the rear 02 was following the front . hence the cat code ... Login to read more.

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