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#1
05-28-2006, 05:21 PM
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94" 4runner o2 sensor????
Where are the up and down stream o2 sensors. i have replaced the one directly in front of the cat, but can not find the other one... thanks (v6 sr5 4wd)
Last edited by jmk8888; 05-28-2006 at 06:21 PM. 
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#2
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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