Would like to get your opinion on some issues I am having with a 2013 Dart 1.4 DDC misfiring/hesitating when accelerating hard (notice it at 3000 to 4000 RPM). The multivalve actuator was recently replaced at the dealer after it failed. I have replaced all coil packs and plugs.
With no codes it seems that it is possible You have a fuel quality issue, have You taken a fuel sample, and are You running premium fuel or???????????? It sounds like a
lean or "dial back" response as the boost/cyl. pressures start to "hit". If the ECU sees any detonation it will take out some boost & timing to "fix" it, it will not set a code.
