9-3 Sedan, Cabrio '04+, Combi, 9-3X Workshop
I just swapped out the engine on my 03 saab 9-3 due to my previous blowing up, anyways I fired this one right up and ran fine but after about 20 miles it started misfiring at idle and hesitating when pressing the gas. I pulled the code and its p1312 and p0300 which p0300 is a multiple misfires...