DMONSVETTE

Random Misfire code P0300. What did you do to resolve this code?
TIA

mch28

Crank position relearn fixed mine. Used EFI Live.

DMONSVETTE

Interesting. Thanks for the info

548chevelle

Plug wires. I had a nice Taylor 10 mm red set for about 3 years. Then a month ago P0300 came up. Put the factory set in and the code went away. Checked the Taylor wire ohms and they were all 250 ohms (vs 850 stock). Put the Taylors back in and got the P0300 immediately. Put the factory wires back and the code went away. I'll try putting one Taylor back at time and see what happens.

CMY SIX

plug wires, just put roller rockers on and I thought I broke it, got MSD wires, installed them, not broken

DMONSVETTE

My p0300 nightmare was resolved after I replaced the fuel injectors and the oxygen sensors.