Thread: o2 sensor
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Old 12-08-2004, 03:55 PM
manny manny is offline
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Join Date: Feb 2003
Location: Ontario, Canada
Posts: 3,160
This is getting as controversial as " oil change intervals ".
In my experience, an O2 sensor can be almost as unpredictable as a lightbulb.
Some seem to run forever, some not.
A good O2 sensor can be observed by watching the " cross-counts ", i.e. how many times it switches from rich to lean, in a given time.
Duke 2.6 correctly pointed this out earlier.
As an O2 sensor ages, it will get " lazy ", i.e. instead of, say 10 cross-counts/second, it slows donw to, let's say 5 crosscounts.
This may not result in the illumination of the Check engine light, but can have an affect on emissions & fuel economy.
Bottom's up to you to decide.
2007 C 230 Sport.
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