i got a 04 4.6l and wanting to do some maintenance on it. im about to hit 100,000 miles and was wondering what exactly do i need to buy to change out the sparkplugs? if anyone knows where i can find the part numbers please let me know. also do i need to buy new wires? or do these not use them? i was also trying to research how to clean the throttle body on a 4.6l but could only come up with the 5.4l. thanks for the help!

 

coil packs, no wires

 

Use Motorcraft double platinum plugs or Denso Iridiums. No wires, you have a coil on top of each spark plug. Throttle body cleaning is pretty much the same no matter what engine you have, but keep in mind you have an electronic throttle, not cable-operated.

At 100k, you should change all fluids (tranny, diffs, transfer case, coolant).

jmf, we have some technical police here who will tell you in no uncertain terms that they are not "coil packs" - they are "coil on plug" or COP. Coil packs were used on the V-6 and the 4.6 prior to around 2000. I personally don't care what they are called as long as you know where they are!