Unplug and remove the old one. Screw in the new one and plug in the wires.
what is the wiring diagram for the o2 sensor on 2000 s10 blazer. it has 4 wires. what what do they all do /
There are several O2 sensors on that vehicle and they are all threaded into the exhaust system at various points.
When a O2 sensor goes bad the check engine light will illuminate. The code set in the ecm will lead you to which O2 sensor is bad.
Remove the vacuum hose from the O2 sensor. Remove the wiring harness. Remove the O2 sensor retaining screws. Reverse the process to install the new O2 sensor.
Depends on which engine it has and what year it is.
Should be the rearmost O2 sensor in bank 2. Use a wrench or O2 sensor socket to get it out. Unplug it first from the harness so it doesn't get all twisted and damage the plug on the car's harness.
Haynes makes a manual with the wiring schematic for the O2 sensor on a 1991 Chevy Blazer S10. The manual can be found at most book stores.
Replace the Downstream O2 sensor (after the catalytic converter)
There is more than one O2 sensor and they are all threaded into the exhaust system at various points.
A short to ground. Check wiring/sensor for damage.
That would be the O2 sensor after the catalytic converter.
No, the O2 sensors are out of the "loop" until the engine warms up.