Two. One on the bottom of the exhaust manifold and one after the catalytic converter on the exhaust system.
The upstream O2 sensor is mounted in the ehxaust manifold The downstream O2 sensor is mounted in the exhaust pipe after the catalytic converter
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could be the oxygen sensor. that's what it was on mine.
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There are several vacuum hoses routed throughout a 2000 Chevy Cavalier. To find the hoses, use a factory service repair manual of a 2000 Chevy Cavalier.
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no
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I have a 2000 olds alero 4 clylinder and yes it has two oxygen sensors!! I have a 2000 olds alero 4 clylinder and yes it has two oxygen sensors!!
There are several O2 sensors on that vehicle and they are are threaded into the exhaust system at various points.