I am planning on maintenance tune-up for my truck 2005 Dodge ram 1500 Magnum 3.7L V6 2-door.

I find spark plugs that I want to replace. I am not sure about spark plug wires and ignition coils.

I could not find spark plug wire set (for my truck) at online auto parts. I called a local dealer, they said my truck does not use spark plug wires, it uses ignition coils (I.C.) instead. Does it mean I have to buy 6 I.C.?

Can someone confirm this?

Do I need to buy ignition coil wires, also?

Regards,

 

Can you open your hood and look to see if you have wires? If you have COP's (coil on plug) you normally don't replace them as a maintenance item. You replace them when they fail..

 

If you're replacing the spark plugs then you should replace the boots as well. The boot consists of a spring which connected the coil to the top of the plug. The boots should be pliable and the springs should be shiny. Pack the boots with di-electric grease (don't skimp) to ensure good current flow. The boots are cheap, so don't be cheap by not replacing them.

 

I think it is COP. I can easily see 3 on left side. See attached pics.
Do You know how many COP for my truck?
Regards,

 

Thanks for response.

If I replace new Ignition Coils, do I still have to purchase addition boots?

 

You don't need to replace the ignition coils until one throws a code. They're designed for very long life, as in hundreds of thousands of miles.

 

Only need boots if you rip one taking it out. Make sure you put a little anti-seize on the plug threads when you put them in and a little dielectric grease on the plug itself when you put the coil back in (for future maintenance).

 

Boots are cheap and easy, hence why they should be replaced with every spark plug change. Why cheap out and re-use them? The rubber ages due to the extreme engine heat and then the vehicle owner is saddled with trying to remove torn boots at a later date.

 

Thanks HemiLonestar, Gary-L and jkeaton for your advises.

I talked to a saleperson at an auto part store, he said the I.C. is designed to last as long as its life. Just replace malfunction one as needed, and there are 6 I.C. for my truck.