Uncle_Enzo
NAXJA Forum User
- Location
- Los Angeles, California
I did some searching and haven't been able to find an answer.
Are the actual sensor parts of of the upstream and downstream O2 sensors the same and is it just the wire harnesses and connectors that are different?
I found NTK O2 sensors part numbers for my 1999 XJ sport:
23151 upstream
23099 downstream
I bought the 23099 cheap on amazon. 23151 looks like it has been discontinued. Local Autozone, Napa, and Orielly's sell the 23151 for 70-80 bucks before everyone runs out vs 30ish on amazon for the 23099.
Can I just buy another 23099 and wire with the correct pins to the upstream harness from the wiring diagram info? I'm pretty handy with a soldering iron.
I have a Free America XJ smog wise. Someone else was nice enough to import it to Kalifornia for me before I bought it. Some jackasses stole my catalytic converter last March. Now it is time for some government and have get a smog inspection. (Despite said nice importer paying a 300 smog impact fee because out of state vehicles produce more smog.) I have to replace at least my downstream sensor. (no way is that thing is coming out without breaking it) Besides the fact that, both O2 sensors on look original and I'm not sure how trustworthy they still are. It sounds like a happy fantasy to get more than 13mpg on my stock rig. Perhaps new O2 sensors will help.
If I can't use a 2nd downstream sensor, is it ok to mix Denso or some other OEM brand upstream sensor with my NTK downstream sensor?
Are the actual sensor parts of of the upstream and downstream O2 sensors the same and is it just the wire harnesses and connectors that are different?
I found NTK O2 sensors part numbers for my 1999 XJ sport:
23151 upstream
23099 downstream
I bought the 23099 cheap on amazon. 23151 looks like it has been discontinued. Local Autozone, Napa, and Orielly's sell the 23151 for 70-80 bucks before everyone runs out vs 30ish on amazon for the 23099.
Can I just buy another 23099 and wire with the correct pins to the upstream harness from the wiring diagram info? I'm pretty handy with a soldering iron.
I have a Free America XJ smog wise. Someone else was nice enough to import it to Kalifornia for me before I bought it. Some jackasses stole my catalytic converter last March. Now it is time for some government and have get a smog inspection. (Despite said nice importer paying a 300 smog impact fee because out of state vehicles produce more smog.) I have to replace at least my downstream sensor. (no way is that thing is coming out without breaking it) Besides the fact that, both O2 sensors on look original and I'm not sure how trustworthy they still are. It sounds like a happy fantasy to get more than 13mpg on my stock rig. Perhaps new O2 sensors will help.
If I can't use a 2nd downstream sensor, is it ok to mix Denso or some other OEM brand upstream sensor with my NTK downstream sensor?