Ecu shows code 43.... along with code 43 i kno its the fuel supply but its starts fine still has its power. While driving the car it runs good up to 4krpms when its starts missin like a sowing machine and the rpm hand just around like crazy while accelerating.. motor has 212,xxx miles. Any ideas what the main problem is before i tear it all apart and change all injectors, fuel rain, fuel filter, fuel ascending unit, and the fuel pump???? All help would be greatly appreciated!!!