If your XL-7 is a V6, then it may very well have two o2 sensors, in the event that it does it will always be worht it to replace both of these, that way it makes for less headaches down the road.
NO. there 2 different things / sensors.
As far as I know they can not be cleaned. Must be replaced.
If the oxygen sensors for the 1991 Chevy 4.3 is running rich when it is warmed up it is best to have the sensors replaced. Once the sensors are replaced this should resolve the issue.
They are replaced when they go bad.
There are 3 oxygen sensors and all 3 should be changed for the best performance and fuel economy. ON THE 1995 Ram there is only one O2 sensor on the cat
The oxygen sensors that connect to the exhaust system. There should be two, and they should screw into the side of the exhaust.
Oxygen sensors are located in the exhaust manifolds & in front pipes, should have 4
When do you replace the timing chain on a 2005 Suzuki Grand Vitara?
Should be 4.
Oxygen bags? Are we talking air bags or oxygen sensors?
It should have 4 of them.
Follow the exhaust back, in the exhaust there should be spark plug looking sensors with a smaller single wire coming out the top, these are your oxygen sensors. Depending on year there can be one to four sensors on your auto.