[tech]: o2 sensor update

[abatzis2@hotmail.com (Michael Abatzis)]

>From: Allyn <amalventano1@comcast.net>


>hrm, it should work, but it will take like 5 minutes to get the sensor hot
>enough to put out the correct voltage.

that's what i thought. but it didn't. this is why i was surprised at what 
the problem ended up being.

>it might have been just hard to see on your analog meter.
nope, dpr wasn't fluctuating; that's why i tried the meter to begin with. it 
just wasn't putting out a signal.

>another hunch is that if the heater supply wire was shorted to ground then
>the cis box may have forced itself into open loop mode (im guessing here).

maybe, but i don't think it was shorted; the female end was still in the 
plastic plug, just not making contact with the male end.


> > 2. the black wire DOES put out a voltage, but it's wicked small. my 
>analog
> > meter barely moved from the voltage. it isn't enough to light my led 
>test
> > light.
>
>actually, it does put out decent voltage, but it cant carry any load. an
>analog voltmeter is too much for it and easily loads the o2 sensor output 
>to
>the point where you get almost no voltage out. a digital multimeter will
>show up to one volt from the sensor (dvm's have less circuit loading).
>
>i'll do some more testing next time i got the rieger ripped apart (soon)...

i figured that, but i was surprised that it didn't light the led test light. 
wierd stuff.
-michael

>Al
>
>Allyn Malventano, ETC(SS), USN
>87 Rieger GTO Scirocco 16v (daily driver, 170k, rocco #6)
>86 Kamei Twin 16V Turbo Scirocco GTX ('it has begun', rocco #7)
>87 Jetta 8v Wolfsburg 2dr (daily driver, 260k, 0 rattles, original clutch,
>driveshafts, wheels :)
>
>


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