I have a 2004 Lincoln LS with two dead cylinders. The first and second on the right side. I found that I am not getting a signal sent to those injectors. It sends one signal then a very long pause the two signals back to back with another long pause. I tested this with an LED light. All the other injectors are working great. The positive wire test full voltage. I am guess I have a module going out. I am not sure where to find the sender for the fuel injectors and I am hoping it is not in the PCM.