Have you checked/replaced the relay? If this is working correctly then you may need to be looking at the actual PCM not grounding the pump out. Checking the signal from PCM?
Fuel Pump Activation
When ignition switch is turned to START position, PCM operates fuel pump relay to provide fuel for starting engine. PCM senses engine speed and shuts off fuel pump by opening ground circuit to fuel pump relay when engine stops or engine speed drops to less than 120 RPM. When ignition switch is in ON position, EEC power relay is energized (contacts closed). Power is provided to fuel pump relay and timer in PCM. Fuel pump receives power through fuel pump relay contacts..
Tuesday, December 30th, 2008 AT 9:17 PM