I have a 1998 Pontiac Grand Am GT 3.1 v-6 that is showing a PO301 reading that says a misfire in cylinder # 1.I have replaced wires,plugs,coils,ignition control module and even the fuel pressure regulator.I had a pressure checked done on the cylinders. After it runs for awhile you can hear the misfire.But when I push down on the pedal it sounds even.
Mar 17, 2012 at 5:03 AM
