Wondering if anyone can suggest a possible cause/fix for what I'm experiencing when accelerating hard with my 2004 9-3 2.0L Aero Convertible.
As I hit the red on the boost gauge there is a knock (best way I can describe it is as if the traction control suddenly kicks in for a second) once or twice. The boost gauge stays rising into the red and there is no drop in acceleration and certainly no apparent loss of power.
Could it be a problem with the wastegate actuator or possibly momentary fuel cutoff.
As I hit the red on the boost gauge there is a knock (best way I can describe it is as if the traction control suddenly kicks in for a second) once or twice. The boost gauge stays rising into the red and there is no drop in acceleration and certainly no apparent loss of power.
Could it be a problem with the wastegate actuator or possibly momentary fuel cutoff.