1991 240sx: How to voltage test O2 sensor ?

ONLY for ADVANCED technical discussion about the 240sx!
vancouverbc
Posts: 3197
Joined: Thu Oct 30, 2003 1:30 am
Car: 1991 240sx

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I get over 1 volt when rpm's are below 2000 and around .998 when rpm's over 2000.

1 volt is rich and zero volts in lean.

I guess I am supposed to create a rich and lean condition and see if o2 sensor detects this.


dkdeleon68
Posts: 203
Joined: Sun Oct 10, 2004 5:23 pm
Car: 1991 240

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vancouverbc
Posts: 3197
Joined: Thu Oct 30, 2003 1:30 am
Car: 1991 240sx

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dkdeleon68 wrote:
http://www.fileden.com/files/2...r.doc

Thanks. Ive been told that the self-diagnostic test is not definitive. I get a normal result from self-diagnostics mode 2 O2 sensor test.


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