Saturn 2002 L200 - missing during cruise & acceleration; determined diagnostic trouble code P0303 (misfire in cylinder 3). Can’t scan body control module; removed coil pack, control module, cleaned boot and coil plastic with rubbing alcohol, replaced all spark plugs with platinum plus AC spark plugs; re-installed coil & control module; resulted in car e ran better but resumed hesitation on acceleration & generally when engine cold; performed Pass lock relearn; no DTC shown on scanner; RESULT car starts but now shuts down after 3 seconds; slight surge in RPM’s before every shut down; KNOWN INDICATIONS: Half tank of gas, Fuel gauge does not register or move, Fuel pumping in fuel rail and voltage energized at no 4 fuel injector, Security light does not flash on and off, but shuts off after starting cycle, #5 Service light and service engine light remain illuminated.
In a quandary how to fix