To remove the catalytic converter from a 1996 Oldsmobile Achieva, first, lift the vehicle and secure it on jack stands for safety. Disconnect the exhaust pipes from the catalytic converter by loosening the bolts or clamps at both ends. Then, remove any brackets or hangers securing the converter to the vehicle. Finally, carefully remove the catalytic converter from its position, ensuring to avoid damaging surrounding components.
No.No.
In the exhaust system, before the muffler.
It has oxygen sensors before and after the catalytic converter.
There is one in front of and one behind the catalytic converter.
take the bolts off. drop the old install the new one.
In my '96 K2500 it is between the exhaust manifold and the catalytic converter.
That would be the O2 sensor after the catalytic converter.
O2 sensors are usually on the exhaust manifold. Actually on the '96 Galant, one is in the header pipe (the pipe running below the engine between the manifold and the catalytic converter) and the other is in the catalytic converter.
There are two of them, one on either side of the catalytic converter in the exhaust system.
Plugged catalytic converter
After googling it is determined Code P0420 ( Catalytic converter effeciency below threshold)
I have a 96 Dakota 3.9L and it is located above the Y pipe before the converter. There is also one directly behind the catalytic converter.