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The 1998 General Motors/Oldsmobile Cutlass came equipped with the 3100 V6. This vehicle has multiple O2 sensors located up and downstream of the catalytic converter. Removal and replacement of the O2 sensors requires first disconnected their wiring harnesses. Then they can be removed from the exhaust piping by a wrench. If the mileage is sufficiently high enough it is advisable to replace them altogether.

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Q: Olds 98 cutlass how do you replace an o2 sensor?
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