How to Check an o2 Sensor

Colabella7077 · Jan 4, 2009

How can you tell if an o2 sensor is bad? I have a 98 and there located before the catz, do you just pull them out? easy install?

bsamoul · Jan 4, 2009

you can use an obd reader, when the car is running you can see the voltage which they are running at. No real other test than that.

peterey2 · Jan 5, 2009

i backprobe the sensor, when the sensor hits 600 degrees, it creates a voltage. theres a spec on the voltage, and you compare the spec to what you got. usually if theres a problem it will throw an engine lite.

Colabella7077 · Jan 6, 2009

my Superchip threw the code. It seems that on 87 Octane Rating or Higher it will cause the code to throw due to the banks running rich. O2 sensor checks out

peterey2 · Jan 6, 2009

makes sense. the higher octane fuel burns slower, therefor more unburnt fuel is going thru the engine, telling the O2's that there is a rich mixture and itll throw a code for it. like you said, O2 is doing its job, and shouldnt be replaced

Colabella7077 · Jan 8, 2009

Problem again! engine light is back on and it's the same codes but on STOCK level.

peterey2 · Jan 8, 2009

could jsut be a bad O2 then...

How to Check an o2 Sensor

Colabella7077

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Colabella7077

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