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Replace one or both O2 sensors? 850 1994

posted by  cleeland on  Fri May 3 05:45 CST 2002
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Whenever you get a O2 sensor code, the first things you should check are your vacuum hoses. Verify they are all in good health and all elbows are in good condition, too.


Right. Absolutely. That was my first diagnostic procedure. I found one, but code came back. The dealer used the smoke machine and found another and replaced it. Some other codes came back. They're indicative of O2 sensor failure, though only indicating the front one at the moment.

-cj






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