9-3 Sedan, Cabrio '04+, Combi, 9-3X Workshop
Hey boys and gals,
I've been getting the random engine misfire code for a while now (about 2 years.) I've had the spark plugs checked and the compression tested and all is good there. I've replaced all 4 ignition coils with seemingly reputable ones from a brand called DriveWire. And something...