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Recommended O2 sensor replacement interval 850

My trusty 1995 850 turbo has 153,000. I don't believe the O2 sensors have ever been replaced. The exhaust is smelling a little rich and my milage is down a bit. Are these usually replaced on a maintenance schedule? Would the "Check Engine" light come on if they were bad? Should I just replace them anyway?

Thanks a lot.






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New Recommended O2 sensor replacement interval [850]
posted by  thisboy47  on Fri Apr 8 06:50 CST 2005 >


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