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Old 02-07-2002, 01:45 PM
mbdoc mbdoc is offline
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
Back in the 1980-85 era MB did recommend O2 sensor replacement every 30K miles, but after that you only need replacement when they quit! more like every 75-90K miles. NEWER cars will turn check engine lamp on when replacement is needed.
Does sound like you do need a replacement!
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