I have seen several maintenence issues on the board about replacing O2 sensors. I have 55,000 miles on a '97 A4. What exactly are the pros to replacing them...?
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O2 Sensor Replacement
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Generally the rule is to replace them every 100K, unless they go bad before then. Trust me, it's not something to look forward to. The one in the passenger's side exhaust manifold is a royal PITA......2000 3.8L Firebird, Silver Metallic<br /><br />\"Yes, London. You know, fish, chips, cup o\' tea, bad food, worse weather, Mary f***in\' Poppins, London!!\"
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by ssms5411Had to be evacuated Monday again after a fire was going on the hill behind us. Only 3-4 hours, they did a good job getting it under control. Especially...2 weeks ago
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