Intermittent stall no rime or reason, at all speeds from idle to 70mph. Will restart sometimes right away, sometimes have to waite up to an hour. Diagnosed as lose of fuel pressure. Replaced fuel pump with new delco,checked all wiring, cleaned grounds. Replaced fuel pump relay with new delco, checked all wiring that was accessable, for breaks, corosion , arcing. Disconnected all visable conectors and checked for breaks, corosion, arcing. HELP!!! This vehicle is my bread and butter I'm getting hungry.