I have a 1999 Saab 95 and experienced a sudden loss of power after accelerating - black smoke from exhaust and extremely bad petrol consumption - 20+l/100km. After a couple of ks the car started miss firing Visited dealer and Tech showed codes P0171 & P1171, indicating lean mixture The car idled fine and accelerated reasonably up to about 3000rpm with max 3500rpm With maximum acceleration (TWO) no power Changed and replaced in sequence -1. Air Mass ...