Since the problem persists even after the relay has been replaced, it indicates a fault with the wiring system, Engine (Powertrain) and/or Transmission Control Module.
At the fuel pump relay, test the Brown/Green wire ( Terminal 85) for continuity to body. If cntinuity to body is present, unplug the PCM or TCM and retest. If problem goes away, the problem lies with the PCM/TCM, depending on which stops the relay from clicking.
Wednesday, July 6th, 2011 AT 2:26 PM