I have a 2001 Ford Ranger v6 3.0L with about 146000 miles. It misfires on cylinders 1 and 2, whiles driving. As I idle, it runs smoothly, but then it starts to miss once I get going. It will calm down again once I park or get stopped at a very long light. Occasionally it will start to buck while driving at 55-60mph but if I let off the throttle for a few seconds it will run smooth, but the CEL flashes anytime I drive. It has a loss of power and can only get up to about 60mph. RPMs are consistent with speed. Replaced spark plugs and wires. It had copper Champions that were very burnt. Ran a can of Seafoam injector cleaner through it. I tested the resistance in the Ignition Coil (only one on vehicle) and it was within spec, but I had to take it out of the vehicle to test. Could it be the coil that only misses while driving? Could a coil that controls all cylinders miss on only 1 and 2? Could multiple fuel injectors fail at once?
Read more: Misfire on 2 cylinders while driving?
