Hi All
Decided the time was right to change my o2 sensors as I am at 150,000 kms which according to NTK is the end of the serviceable life of the sensors in the X trail. Never had a check engine code or performance issues. Nevertheless, like spark plugs they do suffer performance degradation over time and in addition to affecting gas mileage, a bad one can lead to an early death for your catalytic converter. That said, I note that nowhere does Nissan specify a change interval for them. So I am curious how many owners actually replace them before things go bad, or do most just figure on waiting until ecu throws up an error code?
Anyway I am happy to say that I got the upstream one changed, however the downstream sensor is proving difficult. Had to give up on it and hope power blaster over a few days will help on a later attempt. Nevertheless the upstream is the more key of the two, and changing it has resulted in a minor performance gain. I will have to monitor over the next few weeks to see what happens with gas mileage.
So my question is should I just leave well enough alone and just wait for the downstream sensor to fail? Or do I suck it up, and find a way to get the old one out even it means breaking it off to get a full 22mm socket onto it?
PS for anybody doing this, getting the sensor connectors off the metal tabs they mount to can be very challenging. Patience and determination are required.>
Decided the time was right to change my o2 sensors as I am at 150,000 kms which according to NTK is the end of the serviceable life of the sensors in the X trail. Never had a check engine code or performance issues. Nevertheless, like spark plugs they do suffer performance degradation over time and in addition to affecting gas mileage, a bad one can lead to an early death for your catalytic converter. That said, I note that nowhere does Nissan specify a change interval for them. So I am curious how many owners actually replace them before things go bad, or do most just figure on waiting until ecu throws up an error code?
Anyway I am happy to say that I got the upstream one changed, however the downstream sensor is proving difficult. Had to give up on it and hope power blaster over a few days will help on a later attempt. Nevertheless the upstream is the more key of the two, and changing it has resulted in a minor performance gain. I will have to monitor over the next few weeks to see what happens with gas mileage.
So my question is should I just leave well enough alone and just wait for the downstream sensor to fail? Or do I suck it up, and find a way to get the old one out even it means breaking it off to get a full 22mm socket onto it?
PS for anybody doing this, getting the sensor connectors off the metal tabs they mount to can be very challenging. Patience and determination are required.>