i had the ecu replaced,reprogrammed to my key,and it starts just fine. however im still experiencing the same symptoms with the d4 light flashing and the check engine light.my question is could it be 1 or more of the selonoids on the transmission? and what causes the misfire in the cylnders? wires,dist. cap,rotor button? or somthing else? i just had the timing belt, water pump, and the seals behind the cover replaced all with new belts.:confused: