The car does not respond when pushing the pedal. Putting it in park or neutral results in an increase of idle. It then start surging between 500-1500 rpms for no obvious reason. When turning off the engine, the issue is resolved. What causes this phenomenon?
W124, 500E, 124.036, M119, M119.974, surging, Hunting, Problem, Issue, Limp, Mode, Limping, Home