Oldsmobile/Buick Repair: OLDSMOBILE SHUTS OFF, crank sensor, loose ground

Question
I ASKED THIS QUESTION THREE DAYS AGO, I HAVE A 1994 OLDS SILHOUETTE THAT STARTS AND RUNS FO 30 TO 40 SECONDS AND SHUTS OFF. WHEN IT DOES THIS IT DOESNOT CHARGE AND THE INJECTORS LOOSE GROUND I REPLACED THE PCM, FUEL PUMP AND FILTER, CRANK SENSOR, IGNITION MODULE AND COIL PACK, OIL SENDING UNIT AND BATTERY. WHEN THE VEHICLE SHUTS OFF WE STILL HAVE FUEL PRESSURE. NO CODES IN THE PCM THIS VEHICLE DOESNOT NO HAVE A COMPUTOR KEY  

Answer
Hi Frank,
The injectors loose ground?
The injectors should have battery voltage to one side, from the ignition switch.
The other side is connected to the PCM, which grounds them, causing them to operate as the PCM demands.

If you mean they are loosing power, then the inj fuse, or the ignition switch, or a wire connection loose is what I would search for.

If there is power to the injectors when it dies, but no flikkering, or pulses, as shown by noid lights, then the PCM, crank sensor, or loose wire connections is where I would search.

Van