Electronic Spark Control (ESC) System Check

WARNING: This page does not describe the selected car, but rather 50 other vehicles, including the 1983 Pontiac Phoenix, 1983 Pontiac Parisienne, 1983 Pontiac Grand Prix, 1983 Pontiac Firebird, and 1983 Pontiac Bonneville. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Flow Chart - Electronic Spark Control (ESC) System Check (Engine Knock, Poor Performance Or Poor Economy) - No Code 43

Fig 2: Flow Chart - Electronic Spark Control (ESC) System Check (Engine Knock, Poor Performance Or Poor Economy) - No Code 43