9-3 Sedan, Cabrio '04+, Combi, 9-3X Workshop
My "old" TXss did get a good treatment, all services done and lately all 6 coils replaced and 6 new Denso Iridium Longlife spark plugs. Last weekend the car developed a problem and went into what I believed was Limp Mode. Now with dealer, the Saab certified mechanic states the one spark plug has...