Well guys, thanks for trying it. It has certainly cleared up my stuttering issue.
We have to remember that I am running a 3L now so that certain results aren't going to be the same.
I am out of options now, but I think you guys should go to the dealer and complain everyday until a Ford Representative gets involved.
This assumes that you at least documented it one time in the past while the car was under warranty.
Ask for a Ford Representative to get involved. The only thing I can think of for those of you who have had the stuttering since new is that you will need a pcm recalibration. Be careful what you tell them if you have gutted the pre-cats. In fact, don't tell them!
As far as the ignition coil packs, I can not find any logical reason to think that they are bad if the car performs good at both part/wide open throttle at higher rpm. On our cars, the coils are fired by the computer. All you have to do to check them is measure the resistance across the terminals where the main plug is inserted to the coil packs. The pin on the right where the large purple wire hooks to is the 12volt supply. measure with an ohm-meter between this pin and each of the other pins. You should get between 0.5 and 1.0 ohms. Then you can pull the plug wires (at the coil, not the plug) and measure from terminal to terminal, i.e. 1-5 2-6, 3-5, or whatever pairs are lined up. Anyway, you should see something between 13Kohms and 14Kohms for each coil. If the numbers are not somewhere in those ranges, then replace the coil pack.
If you have two that measure 0.5ohm and 13Kohm and one that reads 2.0ohms and/or something outside of 13-14Kohms, then replace the coil pack as well because the spark would not be balanced.
This should take about 15 minutes to make these measurements, and will save you $ so that you don't have to replace your coils. As far as the wires, just plug the stock wires on and compare.
Good Luck, I will continue to help however I can.
warmonger
