2007 Ford Explorer 4.6l 3v Missing/Bad Coils
I just got a 07 Explorer Ltd with the 4.6l 3v engine that sounded like a lawn mover when running. The CEL light on with codes P0171 Bank 1 system lean,P0300 random misfire,P0304 Cyl 4 misfire, P0305 C...
Forum Discussion
If you clear the codes after you change the coils, the PCM will continue to monitor the misfires and a scan gauge will tell you each cylinder and how many misfires it had. Just find the cylinder (or cylinders) with the considerably more number of misfires.
