Will millivolts tell if an O2 sensor is dead?

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12-25-2007, 03:18 PM

Tram

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Will millivolts tell if an O2 sensor is dead?

Hey guys-

I can read the millivolts coming across my O2's with my Interceptor guage...

Is it possible to tell if the things are dead/alive via the readings?

Thanks

Jeff

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12-25-2007, 03:21 PM

jay_lt4

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yes, basically when in closed loop the o2 mv should bounce from 100mv to 800mv and at wot it should level off somewhere around 700-900mv

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12-25-2007, 09:13 PM

Tram

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OK, I need to check them..

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12-25-2007, 09:56 PM

Casey2323

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mine will just cycle between .440-.460 ALLWAYS... Never More to less... IDLE or WOT ... My fuel trims are allways zero.... STFT and LTFT .... Pretty sure mine are Dead?