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Non-lambda mixture testing? 200

posted by  Rule 308 on  Sat May 14 11:52 CST 2005
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last visit: Tue May 8 09:20 CST 2012
[RELATED]

That is kind of an odd one there. Normally you would treat it like a pre '79 car and simply use an infra red bench and set your CO to around 1.0-1.5% at idle. I guess you could kind of try and swag a setting using your O2 sensor. It is designed to read between .1-.9 volts, the lower the voltage the leaner the A/F mixture. If you monitored it with a volt meter, twisted the screw every so slightly clockwise until you had a constant reading of .9 volts and then back it off so it swung back down to .1 and just a teanie tiny tweak back clockwise and see what the volt meter says. Mind you this is all theoretical and may not even work. What I really suggest you do is go to your local smog shop or mechanic that has an hc/co machine and have them set it up right. Does the car still have a catalytic converter? If it does you will need to do your sampling upstream (another pain in the ass) as the cat will clean up the exhaust and your readings will not be correct.


Mark






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