How often should I replace the oxygen sensor in my 1994 buick regal sedan?

Asked by Apr 24, 2012 at 01:43 PM about the 1994 Buick Regal Custom Sedan FWD

Question type: Maintenance & Repair

2 Answers


Replace your O2 sensors when you put in spark plugs -- hopefully that is at least every 30K to 50K or so, but i have seen people get by going to 100K or more


There is no service interval for o2 sensors, when they go bad there bad unless you want to replace them randomly and yes would do ever 50k or so.

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