The cost is $500 - $700.
You can fix black smoking on a 1995 Nissan Altima GXE 2.4L by replacing its catalytic converter.
Between the engine and transmission.
a catalytic converter is a element that heats up with exaust gas flow and burns the remaning fuel present in the exaust gas for emmision porposes(thats a very vauge question)
"How much is the cost of the Catalytic converter on a 1997 Nissan truck?"
The upstream oxygen sensor is located in the exhaust pipe between the exhaust manifold and the catalytic converter The downstream oxygen sensor is located at the catalytic converter outlet
Contact a Nissan dealership.
There are two.
Under the vehicle, in the exhaust flow, before the muffler.