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racer_d · 08-21-2007, 02:06 PM

In crude terms, the O2 sensor senses the quality of the air in the exhaust. If too much air gets in (a lean condition - results in holing a piston) or too much gas gets in (a rich condition -not detrimental but not healthy either) the sensor notices it and this tells the computer how to vary the mixture to create an optimum condition.

08-21-2007, 02:06 PM	#2
racer_d Registered User Join Date: Nov 2006 Location: Virginia Posts: 846	In crude terms, the O2 sensor senses the quality of the air in the exhaust. If too much air gets in (a lean condition - results in holing a piston) or too much gas gets in (a rich condition -not detrimental but not healthy either) the sensor notices it and this tells the computer how to vary the mixture to create an optimum condition. __________________ 1976 914 2.0 2000 Boxster 2.7 (sold) 1978 911 SC (sold) 1970 914 w/2056 (sold)