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#1
10-22-2006, 12:31 PM
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2001 downstream oxygen sensor
2001 Maxima GLE non-california. Get code P0140. Chiltons book shows downstream sensor supposed to be on rear catalytic converter just before muffler. I don't have one there. Best I can figure it is on the front catalytic converter which is visible looking at the converter from under the front of the car. I want to double check this is the correct downstream oxygen sensor. Only other two I found are in the front and back exhaust manifolds. Plus would this fault give me hesitation and sputtering for the first mile after I start the car?
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#2
10-22-2006, 08:40 PM
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Re: 2001 downstream oxygen sensor
that would be B1 S2 , that would be the O2 sensor on the firewall side of the engine , the one after the Catt
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#3
10-23-2006, 01:52 AM
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Re: 2001 downstream oxygen sensor
[quote=Rich Benak...hesitation and sputtering for the first mile after I start the car?[/QUOTE]
From chihiltons bad comic book one gets nightmares. First seek smtg better via link below... First 'five miles' (=cold engine, =open loop) O2 sensors are NOT used. Sensors need heating period before they give accurate feedback 'readings' to ECU (closed loop). You may measure the up/down 1V signal output from sensor, compare each. The last sensor is used only for ECU/diag, it doesnt affect engine according the Nissan FSM...
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. Maxima INFO pages was deliberately trashed (!?) by Cardomain; dont goto http://www.cardomain.com/ride/748507  There was a special Car Electronics -page http://www.cardomain.com/ride/748507/14
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