is the check engine light on???
If so i bet u have a missfire ,, but u need to scan it and see which cylinder it is..
I have seen a few v10's with a coil problem ,, the coil or coils are actually in a sense the plug wires,, also how many miles on it ,, it maybe time for a major tuneup,,, please post back and let us know
Bty it has 10 coils ,, one for every cylinder ,, i also forgot to ask what year it is ,, sorry