Classic Saab 9-5 (1997 - 2009)
The car: 2002 model 9-5 2.0 LPT with Hirsch Stage 1 and 52,000 km on the clock. All services done at the local Saab dealer. DI cassette is about 30,000 km old. Car's been running great (on 98 ROZ fuel) save for the described problem.
The problem: When gently accelerating, mostly between 2,000...