Thats550
Active Member
- Thread starter
- #1
I had system to lean bank 1. I had misfire cylinder 6 and 8. With Catalyst System Efficiency less than Threshold bank 1 and 2. Which is why I thought maybe it was intake runners. Well pulled off manifold and intake runners are not broken. It was dirty so I cleaned the manifold out. Reinstalled and cleared DTCs and only thing coming back now is p0420 and p0430. Idk if I should replace the cats or replace 02 sensors. I tried some cattaclean but the p0420 and p0430 codes came back on. I tried to read the data for the 02 sensors but idk what I'm looking at they were fluctuating good from what I can tell. Any advice or help or suggestions are greatly appriated
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