SES codes jumping
Hello all, 2000 Bonneville been running rough at high acceleration blinking SES. When code pulled it was P0306 misfire cylinder 6. Before working on it I pulled the code and now jump to P0300 random misfire. So I went ahead and changed the coils and ICM and took the car for a run at high speed and it did the same thing code was still P0300 random misfire, Yesterday I put new Spark plugs and took it for a run and again it misfired but now it read P0305 misfire cylinder 5… I was reading several forums here and they mentioned checking the fuel injectors however, what can be the cause of my SES codes jumping from P0306 to P0300 then now to P0305.Can there be something in my fuel rail jumping around?
Last edited by XEN; 03-28-2010 at 10:25 AM.