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Oxygen Sensor

(1990 Buick Riviera)
in Lancaster, OH on October 23, 2009
How many oxygen senors are there in my 1990 Buick Riviera? I have been told they have more than one.
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Popular Answer
on October 23, 2009
there is only one o2 sensor on your car ,, after late 1995 there would be more
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