Today I suddenly felt my 2005 100 felt a bit sluggish and what felt like light jolt as I accelerated. Has never happened before. Wondering if this is the CAT P0430 or the P0156 O2 sensors finally catching up? I had the P0430 light for almost two years now, but then a few months ago the code switched to P0156 after my mechanic suggested a spacer but the didn't do it because the flange was too tight/hard to remove and he didn't want to risk snapping the bolts. Again, this behavior just started this afternoon and only happen during initial acceleration and up to about 20-25 mph range then I felt going away.
Any idea?
Any idea?