had my first coil pack go out on my 2003 expy 5.4L (on a road trip of course )
is the factory coils packs the best ones to use for replacements?? or is there a better aftermarket coil pack you guys have had good results with??.

any preventive mainteance you guys recommend??
should i replace them all or put more dielectrice gease on all the spark plugs??
any help would be much appreciated.

i dont want this happening when i am pulling my trailer on the road

thanks

 

I don't know that one is any better than another. In fact many praise the cheap ($15) Chinese COPs. Personally, I prefer the moderately priced, American made replacements available at most auto part stores. I would never think about replacing all COPs at the same time unless there were an established failure pattern. I might consider keeping a spare in the console in the event one were to fail on a trip, but I don't at the present time.

 

thanks for the reply buzzard.

i should probably get a code reader then. (anyone now the codes already for the missfiring of each cylinder? on the 2003 expy 5.4) i will keep the codes in the glove box with the extra cop.

have you heard anything good or bad about the moto blue cop kits
here is the link
https://www.ford-trucks.com/lc/lc.ph...2Fmusv8wgf.htm

thanks again

 

i have a set of 8 used ones on ebay right now. i think the auction is up to $10.50! they were removed when i did my s/c swap, which came with new coils. no misses on any of them. just an fyi

 

Had one go on my expy as well. I bought 2 no name (I don't recall the name) from Auto Zone. One to use and one to keep in the toolbox when I'm pulling my trailer. I certainly don't need that to go bad when I need all cylinders. I bought a cheap reader at NAPA and have that in the toolbox as well. I've put on approx. 8,000 miles since the COP was replaced. I've read that you should replace all when one goes bad because "once one goes, they are all going to go". I wasn't ready to swallow that big of a pill at one time so I bought 1 extra. That's working out fine for me. When the next one goes, I'll buy another for a spare. I do know that when it does go bad it will be at the most inoppertune time so it will pay to have the extra just waiting. I did replace the 1 spark plug as well

 

I just had one go bad, #8. I have 95k so I took a shot gun method and replaced all plugs and COP's. Bought them of a guy on that Bay site.. $100 for eight.

First tried to replace those spring clamps on the hoses with stainless steel screw type clamps. Some are really deep

Then I removed the plugs one at a time, put just a little anti sieze on plug and tried to torques them down nice and easy (I have two torque wrenches and neigther go down to 13) When installing the COP's I used a lot of the diaelectric foam/grease around the seals of the COP, to help stop the moisture from entering the unit.

I had trouble with #1 & 4 plug where I had to spray with PB Blaster and let sit for an hour.. Then I had to remove the fuel rail to remove #4, it was tough coming out and didnt want to break the plug. To ins

All is back together and the truck runs better than ever! If I were to do it again I would change them out at 80k miles and take the fuel rail off the passenger side for #4.

 

I the codes are something like P030_ last digit is to identify the problem cyl.