D Dragnfly Racing Member Jan 6, 2011 #21 Wouldn't that do it all the time under load? How can you narrow it down to which one is bad?
T tweety2300 Member : 2001 mazda protege mp3 Jan 7, 2011 #22 P0300 is random missfire code. It wont do it all the time and replace both. A lot of people have had their precats go bad from ignoring it so I would do it sooner than latter
P0300 is random missfire code. It wont do it all the time and replace both. A lot of people have had their precats go bad from ignoring it so I would do it sooner than latter
