Re: Oxygen sensor question

[Huw Powell <human@nh.ultranet.com>]

> Does anyone know what the output from the o2 sensor should be.  I know it
> should generate a .5 volt signal at lambda, but the reading I am getting
> from mine fluctuates from about .2 volts to 1 volt.  It just swings back and
> forth erradacly.  Is this normal or should it be more of a steady reading?

It's normal and correct.  Takes a while to get used to the idea though,
but that voltage range corresponds to very tiny fluctuations from a
perfect center position.

Does 0.5 volts  really correspond to the ideal mixture?  Todd P and I
were wondering about this recently...

> Do you think that it is the engine causing the fluctuation a bad o2 sensor?

It's the way it is supposed to work.  Oscillating feedback loop.

-- 
Huw Powell

http://www.thebook.com/human-speakers

82 Audi Coupe; 85 Coupe GT
http://www.nh.ultranet.com/~human