Need help..... I have a 2006 Charger srt8 6.1l. The problem first started with a rough idle and poor acceleration. I would shut the car off clear the code and fixed. Then that stopped working. I would pop the hood move the cables on the injectors and coil packs and start the car back up after clearing the code, fixed. Finally, that stopped working too. Same misfire (low voltage). I replaced all the injectors and spark plugs. It fixed the problem for a few miles then the code came back, Misfire (low voltage). I tried to switch the spark plugs and coil pack from the misfire cylinder for example cylinder 1 to cylinder 3 clear the code. Then the misfire will be in cylinder 5. The car ran fine before this issue besides changing the fuel pump with a used one from a Chrysler 300. The car has a straight pipe and long tube headers. Not sure what else i could try to do.

 

OK, that was confusing.... What code are you getting? Which cylinder was misfiring? Which plugs did you move, and then what cylinder was misfiring?? What plugs are you installing? How many miles on it? (the car....)