First it's a 03 with 120k miles 3.3 non flex fuel. When I start it it fires right up and will idle but it's running rough. It has a bad miss. I replaced plugs with champion double platinums and new plug wires. A few months ago it breakdown from the dreaded melted wire harness. I fixed all that and has been running great until the other day my wife was on her way home and she said it felt like she was running out of gas. Im trying to make sure the problem before I keep buying parts. I was thinking it is the ignition coil but I am trying to be sure before I spend more money this time of year. Is there a way to test the coil still on the can? Thank you in advance.