I have had the coil misfire for over a year now trying to get it to throw a code, no such luck under any driving style. I have a 5 speed in my 03 FX4 4.6 any gear, any speed has yet to get it. Have replaced with aftermarket plugs in the past, but am shopping a fresh set now. Has anyone used the Accel yellow supercoils?

 

stick with motorcraft.

 

Or you can just test the coils before dropping silly amounts of cash for replacing all the coils. Good ones should 1.8 -1.9 ohms. You can also clean them up as described in this video too.

Cost: hr time and a multi-meter

 

I tried that 45-50 then floor it method a few times and still no CEL. I'm going to have that bad cylinder diagnosed today because I don't have time to do It myself. It just has to last a while until I can prep and drop in my 03' 5.4L as you remember. Mom's been in the Hosp. and I've had too much to do even though we've had great weather this spring so far.

I can't wait to get that new engine installed, still need to know which flywheel to use: the 98' or the 03'. I'm going to guess the 03' because if any changes were made, they'd probably be on the back of the 03' engine or crankshaft and I don't imagine the tranny being any different. The 98' E4OD should fit an 03' engine just wondering about that flywheel.