Originally Posted By: jeepman3071
Originally Posted By: Miller88
Originally Posted By: jeepman3071
Yup, NTKs are what went into my Jeep. One went bad so I replaced all four (I have pre-cats and Cali emissions), no issues so far and that was 50k miles ago.
On your 2000 is the bank 2 downstream sensor literally touching the transmission bellhousing?
I'd have to look.
I actually had one of the manifold cats going bad, so I replaced the manifold cats. One O2 sensor was bad, so I planned on replacing just that one. When I pulled out the old manifold cats, I saw how rusty the O2 sensors were and figured it was easier to replace them all at that point. Since my manifold cats are aftermarket, they might be spaced a little differently.
I have lost the bank 2 downstream sensor more than once because it's touching the bellhousing. The wires are pushed, hard, against the bennousing. I rub a bit of insulation off as I'm putting it in it is so close.
Both of mine are dead but no code (yet). I was trying to pull ol' billybob and his powerstroke with bald tires up a steep hill on an ATV trail. Apparently 5 minutes at 4000 RPM will melt the cats or something. There was a strong sulphur smell and now the sensors have the exact same reading.