Thread: Changed all ignition components and have pending Random missfire code.

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.

Set P0300 to no report. Get any misfires after ?

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?

No, but I'd hope that you can find which cylinder or cylinders is causing it.

It is completely random sometime cylinder, 3,4,5,6,1,2. completely random

Can you list the components you changed ex: ICM or coilpacks

ICM, coil packs, spark plugs, wires, alternator, battery.

Did you check fuel pressure?

Not yet. What numbers should I be seeing at idle?

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.

mine started to act up at 239,000. so its close to what mine was. the 109,000 mile c/s is working fine now.

Misfires at idle ? Cam it you can't tell the difference