Thread: 94" 4runner o2 sensor????
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Old 06-01-2006, 01:33 AM
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Re: 94" 4runner o2 sensor????
That engine is OBDI and does not have a second HO2 sensor. They use the second sensor downstream of the Cat. Converter to monitor the Cat. Converter function in OBDII engines (1996 and later).

I believe 1994 trucks made for the California market have a second sensor after the cat. converter.

http://www.autoshop101.com/forms/h24.pdf
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