Oxygen Sensor

[Jtslick89]

On both my XJ and MJ I installed the REM clocks and both showed O2 sensors that seemed shot. Are both of these originals? They look it.

 

I heard only the mopar brand works well. True?

[75sv1]

I use NTK on my XJs. So, MOPAR or NTK, its also NGK for the spark plugs. I just replaced a new Denso on one of my XJs, with an NTK. It does seem to run a bit better. 

[pizzaman09]

I personally only ever use Bosch O2 sensors, have found them to be very good quality on my other vehicles.  I put a Bosch in my Comanche a few weeks ago an it seems happy.  I don't know if it helped as in the same day I found all my manifold bolts loose, so that was a far bigger help.

[Big Dan]

On 5/20/2022 at 11:30 AM, pizzaman09 said:

I personally only ever use Bosch O2 sensors, have found them to be very good quality on my other vehicles.  I put a Bosch in my Comanche a few weeks ago an it seems happy.  I don't know if it helped as in the same day I found all my manifold bolts loose, so that was a far bigger help.

 

I was not so lucky.  I had a Bosch O2 sensor that lasted about 6 months.  I was able to find a NOS Mopar sensor, ran that, and havent had issues.  That's, obviously, only one case.

[ctxj93]

I found Bosch's scale too slowly. Mine worked on first fire up but then stopped shortly after. I put in an NTK and its been fine since.