O2 sensor

From: BARRY OLIVER (DHSPA58@dhs.state.il.us)
Date: Fri Mar 21 2003 - 11:02:57 EST


What would be some indications that it's time to change the O2 sensor? I have 78K on my '99 5.2L 4x4, ant mine hasn't been touched. Is that an Xtnded warranty part?



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