2
i believe there are 2
If you mean o2 sensors, there is one. It is located on the exhaust manifold on the back side of the engine. Gm started the two o2 sensors around 94-95 when obdII was adopted.
The '97 is OBDII. There are 4 different O2 sensors on the '97 Cadillac. http://www.airbagcrash.com
The O2 sensor on any vechicle will be located on the exhaust manifold.
Two, one on each side of the catalytic converter
one at the front of the cat and one after the cat
There are four o2 sensors on a montero sport.
how many o2 sensors on a ford e350 van 2003
You have several O2 sensors on that vehicle and they are all threaded into the exhaust system at various points.
The 2.5 has 2 O2 sensors (both on top of the engine) and the 3.5 has 4 O2 sensors (two on top, and two under the car).
Four; two in the exhaust manifolds and two immediately behind the catalytic converters.