Exhaust pipes
between the exhaust manifold and catalitic converter
yes
how many o2 sensors on a ford e350 van 2003
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).
2
YES
There are two oxygen sensors in a 2003 Sonoma V6 with a 4.3 liter. Prices for the sensors start at $69.95.
It has 4 of them.
My 2003 model has 4 sensors. Two are before the catalytic converters and two more after the cat converters..
On either side of the catalyitc converters.
On a 2003 Jeep Grand Cherokee Laredo 4x4 with a 4.0-liter engine, there are typically four O2 sensors. The upstream O2 sensors are located before the catalytic converter, with one positioned on each exhaust manifold. The downstream O2 sensors are located after the catalytic converter, also with one on each side. These sensors monitor the exhaust gases to help optimize fuel efficiency and emissions.
There are several O2 sensors on that vehicle and they are all threaded into the exhaust system at various points.