We all know these 5.4 liter Ford engines do not last, but I was hoping you could give me an idea what is going on. I am a mechanic and a pretty good at diagnosing, but the truck will run great one day then run like a diesel seconds later. 30,000 miles ago it had all new plugs and coils, along with new cam phasers. I have the codes p0011, p0012, p0300 -p0305, p0340, p0344, and p0345.
I cannot grasp why there are so many misfire codes, unless it is something internal like a VCT solenoid, timing chain, or CMP sensor. I really do not know where to start.
have the same problem?
Thursday, March 16th, 2017 AT 4:53 PM