Quote:
Originally Posted by Austin814
Ok, its been awhile, but since the first post, I have since changed all the plugs, changed all the wires and two weeks ago changed the coil pack for cylinder 6. I am still getting the Cyl 6 Misfire if I get the engine to 5,500 , 6,000 RPM. Its always only Cylinder 6? Need some help if anyone has an idea.
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Not sure of the NA 55 5.4L but the 55K 5.4L had a software issue that would pull a cylinder misfire code and CEL under hard acceleration.
Does the car go into a low power or limp home mode when you get the CEL and then clears up on a restart but holds the CEL?