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Tech Talk Technical Discussion About The Nissan 240SX and Nissan Z Cars |
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04-04-2008, 01:44 PM | #1 | |
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04-04-2008, 04:39 PM | #2 | |
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Remedial info in my post: http://www.zilvia.net/f/showthread.php?t=113925 This is the only thing that matters: http://www.zilvia.net/f/showthread.php?t=113925 This is what the ECU sees at O2 sensor signal pin. The ECU doesn't care how the sensor actually works; only that .9 or more V, i.e. the presence of voltage, indicates a rich condition and 0V, i.e. the absence of voltage, indicates a lean condition. While I agree that there are different materials used in the sensor, and each type has its own pros and cons, but in general, referring back to the ECU, this is all that the ECU expects to see. While it's also true that some types responds more quickly than other, but again, narrowband is very inaccurate so the ECU pulses O2 signal timing to get an aggregte reading. With all SR motors, the O2 sensor has 3 wires: 2 non-polar power and ground for the heating element, and 1 for the signal wire. See my link above for this info. The misunderstanding is in the fact that some manufacturers say that you shouldn't interchange O2 sensor type. This applies to severe duty or marine application where one works submerged in water while the other doesn't. In this application, only the functional submerged type can be used. If you disagree with me, put a multimeter, or better yet, use a datalogger, on the O2 sensor signal wire for a fatty and a skinny and compare the reading to a wideband running at the same time. See what you get. |
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04-04-2008, 05:18 PM | #3 | |
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