Hello, 05 dodge neon srt 4. showing p0304.

Question

Changed all plugs, all wires, all injectors, coil, and cam sensor.. still has CEL, p0304, still idles like a
mis.. what else could be causing this?(05 dodge srt 4)

Answer 1

Hi there,

An internal engine problem could cause this. Do a compression test on #4 to make sure the inside of the engine on that cylinder is in good shape.