You're not crazy. Every day, in every way, you're getting better & better. You should verify that you have a V-6 under the hood so we are sure of what you're asking us.
I would have the codes read & perform a search for them here if I were in your shoes. Annual CEL battles are not neccisarily the norm. You may have seen posts that tell you they can be read for FREE at Auto Zone. A little research can (and likely WILL) save you tons of time & money. Really, do it. CEG has an enormous database of info that you can easily sift through to get info you need.
Now, assuming that you have a V-6:
You have 103k miles so you should seriously consider a
TB (Throttle Body) cleaning.
You should also visit the FAQ section of the main site to see if you can find a proceedure for Upper & Lower Intake Manifold (UIM/LIM) cleaning.
After those two, your car will run almost like new.
You're a noob, so you may not know that the best plug for the V-6 is the Autolite APP764 double platinum. Anything else is a waste of time & money regardless of cost, period.
Plug wires, you have choices (in order of preference):
1 Magnecore
2 Stock
3 Autolite Pro-fit series
If you want pretty colors, you can get Ford Racing Wires. They are about 1/2 the cost of the above choices, but you can expect to replace them more frequently, & they may not fit properly in the plastic looms that guide the wires back to your coil pack.
When replacing plug wires, pay particualar attention to where you plug them in and be sure the connections are nice & snug. A mis-routed wire can be a tricky thing to track down & will make you quite unhappy for a week or two. Mis-fires suck, trust me. They can also damage your engine if left un-treated.
This should be enough to get you started. All of the above are do-it-yourself jobs & not difficult. EVERY LAST ONE is a great maintenance item that will help bring your car back to life in a BIG WAY when they have all been completed with your tune-up.
