how many oxgen sensors on a 1995 millenia
none
4
A 1997 Dodge Dakota has two oxygen sensors.
2
Check
they have 2 o2 sensors on the muffler ELIA
There are a total of ( 4 oxygen sensors ) according to the engine wiring schematic for the 1997 Mercury Mountaineer in my Haynes repair manual ( 2 oxygen sensors are " upstream " sensors used by the PCM to adjust the air / fuel ratio of the engine ) ( 2 oxygen sensors are " downstream " sensors / catalyst monitors )
4
Two, one in fron of the catalytic convertor and one behind it.
The number of oxygen sensors on a Mazda 3 can vary depending on the model year and engine type. Generally, most Mazda 3 models are equipped with two oxygen sensors: one upstream (pre-catalytic converter) and one downstream (post-catalytic converter). Some models with more complex engine configurations may have additional sensors. Always refer to the specific service manual for the precise configuration of a particular vehicle.
You must mean Oxygen sensors. There are 2 upsteam (O2 sensors) and there are 2 downstream (catalyst moniters).