V8
I replaced Bank 2 sensor 1 about 2 weeks ago because I had a code.
I think that was P0420 but I don't recall exactly.
I've only driven it a few times since then. 2x 1 mile trips. 2x 10 mile trips. On the last trip I got a CEL. So I pull codes and found multiple that I did not see before I changed the o2 sensor.
I also changed the radiator fan clutch and some coil packs if that matters.
I did feel like it was running a little rough at idle on drive 4 after I noticed the CEL but I didn't notice this at start up.
I did not notice that on drives 1, 2 or 3 but wasn't looking for it either (and 2 were so short).
Did not notice exhaust smell but didn't walk behind it while running.
Would go sniff it right now but it's storming.
A few internet suggestions were:
-Replace all the o2 sensors (the other 3) or at least the other front side front sensor.
-Clean the MAF sensor
-Replace/clean Fuel Injectors
-Clean TB
-Oil Filler Cap
-Gas Cap
Any other ideas?
Seeing as how mine popped up right after I changed 1 sensor, I am leaning towards it being an imbalance in the other sensors.
So I am ordering those but they won't be here until the 19th. Ugh!
EDIT: Found a few similar threads I am linking here that I am still reading through.
Some of the above ideas are echoed in these:
P0174, Rough Idle & Strong Exhaust Smell
Help needed- Fuel pressure test persistent p0174
P0174
