gsR
02-19-2003, 07:26 PM
I am having a problem with my integra. Its throwing 7 codes. The codes are (po300)random cylinders missfire.(po301)cylinder 1 missfire.(po302)cylinder 2 missfire. (po303)cylinder 3 missfire.(po304)cylinder 4 missfire.(po420)catalyst system efficiency below threshold bank 1.(p01399) i do not know what this code is let me know??? I have replaced the piston with itr pistons w rings.new head gasket. Rod berings. Intake manifold gasket. spark plugs and wires. cap and roter button. new itr cams. fuel pump ,filter and new ecu. after all that i still have the same codes showing. If any one can help me it would be nice>