I am brand new to this forum so bear with me if I stumble around. It looks like there are many of you that know whats what. I could really use some advice/ . I finally got the service light to come on after driving around with a rough runnning condition since December on my 2000 F150 Harley Edition (73,000). Autozone did a diagnostic that showed the #7 cyl. had a mis-fire, guy said it was probably the cyl. coil. From experience I'd have to agree. I had the dealer replace a #8 coil only two years ago. I really don't want to pay another $300-400 to the dealer if I can help it. Any advice, thoughts or help? Thanks in advance for your assistance.

 

I have a 97 which has 2 coil packs. I guess the newer trucks have coil packs built into each spark plug wire or something. I've had the misfire several times on various cylinders. It was always either the plug or the wire. I never had a coild pack problem. I'm sure someone will give you more knowledge on this. But out of curiosity can you swap 2 packs around to try and figure out that it is the pack? You'd have to get another code reading.

 

If your HD has coil on plugs, it's not a big deal to change them. 1 screw and 1 electrical connection. The biggest hassle is getting reaching in thru the stuff that's in the way.

Since you know the cylinder, just replace the C-O-P

Good luck

 

At the expense of showing my mechanical ignorance, what is the C-O-P? Are there any detailed resources I can find on the web that shows the cylinder sequence and where to find the connection your refering to.
Again, thanks for your help and input.

 

COP stands for Coil-On-Plug. Each cylinder has its own ignition coil on your 5.4. The cylinders are numbered as follows: 1-4 right side (passenger) from front to rear. 5-8 left side (driver) from front to rear. Your number 7 is the second to last one on the drivers side. Good luck!

 

Many thanks for the info. I'll see if I can take care of it.