Should you replace O2 sensors when you replace catalytic converter?
Bad O2 sensors are also a leading cause of catalytic converter failures. Replacing O2 sensors for preventive maintenance, therefore, is something you should recommend not only to restore peak fuel efficiency and to minimize exhaust emissions, but to also prolong and protect the life of the converter.
Does catalytic converter affect oxygen sensor?
As the catalytic converter warms up, the downstream oxygen sensor (bottom) changes from a switching to a constant-voltage signal. The signal from the downstream oxygen sensor indicates when the catalytic converter is operating efficiently.
What happens if the oxygen sensor goes bad on a Subaru Forester?
When an O2 (oxygen) sensor go bad, it’ll cause your Subaru Forester ‘s engine to run less efficiently. Your Forester can exhibit symptoms when the Oxygen sensor has gone bad.
How does the OBD 2 system work in a Subaru?
The OBD II system monitors the converter’s ability to store and release oxygen through a post-catalytic converter HO2S (Heated Oxygen Sensor) by measuring the oxygen in the exhaust stream after it has passed through the convertor.
Is the forester targeted for catalytic converter theft?
I am restoring a 98 forester and two California C.A.R.B. compliant cats were under $500 from Eastern Catalytic. Anyway, I purchased some catalytic converter locks for my truck. It consists of two steel plates that clamp over cat with break away nuts and bolts and secure to frame using aircraft quality steel cable.
Where does the catalytic converter light off on a Subaru?
The point where the rear oxygen sensor becomes a straight line is called the catalytic converter “light off” point. It is important to verify catalytic converter light off prior to determining if a catalytic converter has failed. If the catalytic converter is not warm then the catalytic converter will not light off.