My son was driving his Z and it slowly died. Got it home and discovered the fuel pump fusible link was blown. Tracked down the cause to a wire shorted to the body. Repaired the wire and insulated the body wear point. Started the car and runs fine. When I turn the key off and the car keeps running. I have to disconnect the battery or pull the ECCS relay to get it to stop. Any suggestions on the cause and what to check? Any help or suggestion greatly appreciated.