Re: OXY sensor readings??

["I.Mannix" <mannix@privatei.com>]

>>
>The oxy sensor is actually a small fuel cell - it has a very high
>resistance, and will probably read open if you use an ohmmeter. Full rich
>output is about 1.5 volts, if I remember properly - there's something in the
>manual about using a flashlight battery to test the circuit. You need to use
>a high impedance voltmeter to avoid loading down the circuit - analog
>multimeres will not read what the computer is really seeing, and will cause
>the computer to try to 'fix' the reading by changing the mixture - probably
>much richer...
>
>Chuck Kuecker
>


I thought there was some way to use that test plug - the plug that goes
nowhere - to get an idea of the mixture.  My Bentley covers it breifly, but
not enough.  From what I've been told, it is only somewhat accurate, but
that's all I want for right now.  I have access to a CO meter, and I want
to compare the cheese whiz method with the CO meter, so I can get an idea
of my mixture whenever I want.  I don't know, I swear I've seen it
discussed here before, maybe it was the NG.  Anyhow, I'll try there too,
anyone know what I am talking about?  Chuck, are you talking about putting
something in line with the sensor?  Does your car have that little plug?
Mine is somewhere between the head and brake booster, last I saw it.  Maybe
I am making this up;).


Mannix






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