YJason
09-22-2008, 06:03 PM
I'm getting a P0300, P0301, & P0301 code all the time, I'm also getting a couple codes randomly for the down stream O2 sensor which I don't have one.
Could the CPS be going bad causing the multiple misfires? The downstream O2 sensor causing it? The plugs, cap, rotor are newer and it has newer Mallory 8mm plug wires on it. It does seem to idle a little rough but purr's like a kitten at 1000 RPM+. What else should I check or what else can it be. Also this is a H.O. 4.0L out of a 96 XJ.
Could the CPS be going bad causing the multiple misfires? The downstream O2 sensor causing it? The plugs, cap, rotor are newer and it has newer Mallory 8mm plug wires on it. It does seem to idle a little rough but purr's like a kitten at 1000 RPM+. What else should I check or what else can it be. Also this is a H.O. 4.0L out of a 96 XJ.