bank 2 too rich and bank 1 too lean need help
Ford ranger 2003 3.0 flex fuel 2 wheel
My rpms went for 3000 to 850. I had recently changed out the left exhaust manifold cuz the old one crack around number 6 area so I change that out that's when I had lost rpms. I also had misfires on 4, 5, 6 in which I corrected. The crack manifold was burning up number 6 wire and 4 and 5 well I changed out the intake manifold gasket n corrected that problem I also change the mass air flow sensor. I also changed out the o2 sensor one the left. After all that my rpms went up 1500 to 1800. The truck feels like its dragging. When its not in gear it sounds good no misfires but when I put in drive its starts losing power. Anyone has an idea what it could be. I am thinking catalytic convertor which one don't know. Can someone help me greatly appreciate it.
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