p0354..any thoughts

[97exploder19]

This code came up yesterday out of the blue. Deleted it this morning and hasnt been on since.

Truck has been running fine besides maybe a slight slight miss at idle. It just doesnt idle as smooth as I think it should. I have new Motorcraft plugs that I intend on installing this weekend.

Coil pack going bad possibly? I searched on Google and couldnt find much info on this pertaining to the 5.0. Mostly 4.6, 5.4 wit COP.

 

[J_C]

Could just be the plugs or wires, especially if it still has the originals. How many miles on them?

While the code indicates coil pack, it won't be working right if the plugs or wires can't complete the circuit.