The O2 sensor is located usually right behind the catalac converter under the vehicle by the muffler.
What sensors? Be specific.
They are all threaded into the exhaust system at various points.
There is no EGR valve on the 2002 4.3L (code W)
You don't. It's done electronically with information from various sensors sent to the engine control module.
There are several O2 sensors on that vehicle and they are all threaded into the exhaust at various points.
Top center of engine, 2.2 or the 4.3 engine.
All O2 sensors are threaded into the exhaust system at various points.
Yes
A 1998 Chevy S10 Blazer has a total of two oxygen sensors. One is used for the upstream and one for the downstream.
Depending on which engine you have, there are several O2 sensors on the vehicle and they are all threaded into the exhaust at various points.
There are several O2 sensors on that vehicle and they are all threaded into the exhaust system at various points.
There are several O2 sensors on that vehicle and they are all threaded into the exhaust system at various points.