If the 8th digit on your vin number is an X as mine is there are 3 oxygen sensors. I don't have dual exhaust so I have one o2 sensor below each manifold (visible from underneath the van) and one after the catalytic converter.
There are two.
you have 3 on the astro & safari vans 4.3L
four
there are 4 o2 sensors
2 upstream and 2 downstream for a total of 4 O2 sensors.
All the O2 sensors are threaded into the exhaust system at various points.
A 2002 Chrysler Town and Country has two oxygen sensors.
The o2 sensors on the 2002 Pontiac Grand Am GT are found screwed into the exhaust pipe. There are 2 of these on the 2002 Grand Am GT.
That vehicle has several O2 sensors and they are all threaded into the exhaust system at various points.
There are four o2 sensors on a montero sport.
1 and it is located behind the air intake ...take off your air cleaner and casing..its behind there
how many o2 sensors on a ford e350 van 2003