Need to replace the upstream 02 sensor on my '97 Wrangler 4.0L. Looks like NTK has a pretty significant supply chain shortage right now, have searched all over the web and can't locate this sensor. I've seen lots of posts about sticking with NTK sensors; anyone have a recommendation on a substitute brand (besides Bosch, which I've heard to steer clear of)? Denso?
Scheib
My 98 check engine light code says to replace mine. I did with NTK. Light came right back on, same code.
The NTK upstream sensor for the early 4.0L has been obsolete for some time now. The downstream may also be obsolete, but as it is replaced less often there may be some of those around still.
Last time I replaced my upstream sensor I went for the Walker sensor. It seems to have been doing fine for the last few years.
Last time I replaced my upstream sensor I went for the Walker sensor. It seems to have been doing fine for the last few years.
From what I've been told NTK isn't producing the O2 sensors for our Jeeps any longer. Shame because they really were the best. If you manage to find any snatch them up.
As far as the code Jonny is right, it shows there's a problem in that chain but not what the problem is. I had that engine code late last year, managed to get an NTK to replace it. Code came back three months later, luckily able to warranty swap it with the last NTK advance auto had in the entire region, code came back three days later. Turns out the pigtail had come loose and cooked against the manifold. Replaced the burnt section and no more code.
As far as the code Jonny is right, it shows there's a problem in that chain but not what the problem is. I had that engine code late last year, managed to get an NTK to replace it. Code came back three months later, luckily able to warranty swap it with the last NTK advance auto had in the entire region, code came back three days later. Turns out the pigtail had come loose and cooked against the manifold. Replaced the burnt section and no more code.
I am getting a P0172 code - system too rich bank 1. I recently replaced the original fuel injectors ('97 Wrangler, 4.0L, 150K miles) with a new set of OEM/Mopar injectors, so don't think it's an injector issue. It does run a bit rough 0-20mph but then seems to smooth out above 20mph. I think the 02 sensors are both still original. I've also recently changed spark plugs and cleaned the throttle body.
Not sure what the code is. Mechanic told me the sensor was causing the light just as an afterthought when I was having my air conditioner compressor replaced. I do have an intermittent surge when idling or driving at extremely low speed. Cleaned throttle body, etc. Still have the issue.
thx - I replaced the exhaust manifold a few years so should be good there - but I'll check those other 2 items, really appreciate the tips!
I was able to find an OEM Mopar (NTK) upstream sensor 5604 1212AF....my manual says the OEM number is 5602 7916.....but I've seen a few sites that show 5604 1212AF as the current replacement for 5602 7916. Anyone know if that is in fact a good current OEM replacement number for this sensor?
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