Where is the oxygen sensor located on a 1993 Plymouth voyager Se with a 3.3 enigine and how many they are?

On a 1993 Plymouth Voyager SE with a 3.3 engine, the oxygen sensor is typically located in the exhaust system, usually before the catalytic converter, on the exhaust manifold or pipe. There is one oxygen sensor for this engine configuration. If equipped with a dual exhaust system, there may be an additional sensor downstream, but generally, there is just one primary sensor for this model.