1998 honda civic catalytic converter cleaned out after getting 420 converter code...
Had converter cleaned out until there was nothing left! Car ran like a dream first day.. since that time about 6 days now.. progressively driving with less gumption although it hasn't tried to die on me---brother is supposed to be doing something with the downstream 02 sensor this weekend.. any ideas? Already had distributor in Honda housing, coil, control module, plugs, wires, fuel filter, leaky valve gasket on engine.and upstream 02 sensor..?