Om my 88 2.3l notch the fuel pump will not shut off.  I have to disconnect the battery to shut it off.  When I reconnect the battery the fuel pump does not come on until I turn the ignition then it does not shut off even with the key out.  I have replaced the fuel pump relay, ecc ignition relay, ignition starter switch, fuel pressure regulator, fuel filter and swapped the fuel pump with one out of a 5.0.  What besides the computer could it be.  It is not a wire grounding out or the fuel pump would start up when I put power back to the car.  Any ideas before I buy a new computer?

               JS