2nd try: 3-wire O2 sensor.

[Dixon Cole]

Sorry about the blank message... here's another try:

Building a O2 meter using a 3-wire and a unity-gain op-amp ckt feeding an
analog voltmeter.     
Heard something about using a 18MM sparkplug anti-fouler adapter used as a 
fitting for the O2 sensor to screw into. (cheap alternative to $8 weld-on
bung that I'd have to order) 

Questions:

What vehicles have  3-wire sensors that are cheap? (make, model, year)?
Which one fits the anti-fouler or which anti fouler fits the sensor?
Is it worth getting a used (junkyard) sensor or just pop for the new one?

Thanks for the help!

-- 
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Dixon Cole - dcole at austin.ibm.com     IBM RISC/System 6000 Division, Austin, TX
(512) 838-8971, T.L. 678-8971         Level 3 Support