TRSCobra
NAXJA Forum User
- Location
- Gig Harbor, WA
I replaced the upstream O2 sensor because it was having the same 2000 rpm stumble that the last O2 sensor fixed some 5 years ago. Now the jeep is running rich and idles really rough. No CEL, either. I'm aware of a small crack in the exhaust manifold (have a replacement waiting to go on) but the crack was there long before I changed the sensor out.
Is it possible that the new sensor is more sensitive to the leak than the old one?
Is it possible that the new sensor is more sensitive to the leak than the old one?