Thread: O2 sensor
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Old 01-06-2003, 03:51 PM
jchip jchip is offline
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Join Date: Nov 2001
Location: west orange, NJ
Posts: 47
O2 sensor

The manual says replace the O2 sensor once at 60.000 miles but makes no mention of changing it out ever again. What's the general practice for a 1991 420 sel. I'm at 207,000 miles.

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