Dazed and Confused
Join Date: May 2012
Location: Upstate New York
Re: P0300,P0301,P0302,P0303, P0316-Taurus2005 Vulcan
In case you didn't look them up, all are misfire, 300, random, 301-303, cylinders 1, 2 and 3, and 16 is at start. If the coils are original, they may be at the end of life. I recommend when replacing a coil, replace them all, since they pretty much share the same load and their life span is pretty much the same. Check plugs and wires, if they are original, or have been their for a while, they may be due. I would definitely start with pulling the plugs. Their condition can tell you if your just getting poor spark or if something else is causing the deterioration of your fire.
Chewing on asphalt and drinking dinosaur wine