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What is the useful life span of an O2 sensor? 200 1986

My mileage has dropped from an average of 28mpg to 25 to 26 over the past year or so. I replaced my O2 sensor about 150K miles ago.

Thanks.
--
'86 sedan with 443,000 miles on the original engine and automatic transmission






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New What is the useful life span of an O2 sensor? [200][1986]
posted by  Xraybob  on Wed Sep 29 00:29 CST 2010 >


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