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Changed all ignition components and have pending Random missfire code.

buickman104

buickman104

New member
As the title states I changed all ignition components and have pending Random missfire code. There is really no particular triggers just just the random roughness at idle and a bong from the dash. Then I look at the aeroforce and get the pending code p0300. Other than that the car runs great. Running 1 degree of KR and 14 degrees of timing. Any advice? This only happens at idle.
 


Haven't tried that yet. I can feel the missfires in roughness, but only at idle. Think setting it not to report would fix it?
 


You didn't specify but did you change all ignition parts to try to cure the P0300 and it's still happening? Clean all contact points on ICM.

Sent from my LG G3
 


i was getting icm codes and misfire codes,that would come and go when cleared. then i got a crank sensor code. so i changed the crank - cam to icm harness and it was better for a while then it acted up again here and there, then i swapped the motor and used all the same parts but a used crank sensor the used engine came with. been tits since.
 
I have been through multiple ICMS, and coils. Cleaned all contact points etc. The fuel filter was just changed. This engine has 209,000 miles on it. I have never changed the Crank sensor on it though. It has crossed my mind that maybe the crank sensor might be getting slow in its old age. :p
 


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