9-3 Sedan, Cabrio '04+, Combi, 9-3X Workshop
Hey
I have an issue with a misfire giving a rough cold engine idle, once warm there is just an ever so slight rumble in the back of the seat , the engine finally threw up a code, ( once in the whole time) of cylinder 4 misfire. I have change engine temp sensor, lamba sensor, coil pack, cleaned...