Hey Folks,
I've been a lurker on this forum for well over a year and finally decided to signup and get an account.

I have a 2011 Expedition EL with 67,000 Miles and 75% of the time fill the tank with 93 octane. It is a daily drive but only sees about 10-15 miles per day. I baby the crap out of it too.

I have recently noticed some hesitation under load (Not WOT and not towing anything), but when taking off with a heavier foot to get out in traffic. It reminds me of a car with points or an older ignition system in that if feels as if the engine is breaking down at higher RPMs (Above 3,500)(Know what I am talking about?). I almost feel as if I hear a misfire too, almost like a faint backfire when the hesitation happens. I was already planning on doing some of the recommended maintenance sooner than later. Within the next few weeks I will be changing the spark plugs, replacing the fan belt, air filter, and dropping the tranny pan to replace the filter and add some fresh fluid (Yes I know that I cannot do a flush). I was thinking that the hesitation may be caused by one of the Coil-on-plugs (COPs) and/or a worn spark plug. My prior experience with a GT mustang is that once one COP goes, the others tend to slowly go after that. So to make a long story short, I think I am going to pull the trigger on replacing all COPs.

3 Questions:
- Anyone have any issues with the Accel Super Coils (P#: 140033EK-8)? This appears to be the only upgrade choice over stock.

- I notice that MSD has their blaster coils but they state they are for 2004-2008 4.6/5.4 3v. Shouldn't the 2008 style work on any 5.4 3v 2007- 2014? I have had good experience with MSD in the past and they are cheaper than the Accels.

- Any other recommendations on COPs?

 

As both a hi performance Mustang and a Expedition owner, you are better off to stay with stock OEM parts. I know from experience that nothing in the aftermarket will last as long as stock. Coils are a real driveability issue and the manufacturers cannot afford to put in a cheap part that will cost them millions in warranty. Aftermarket suppliers do not have that concern. I have went thru different brands and find they all have fairly consistant issues with failures in short periods of time. Many others on Mustang forums have experienced the same. Your Choice, but be warned. Some OEM parts are hard to beat.