[DonRotolo]

Ether,

From your description, we know several things are good.

But we don't know if the fuel pump relay is good, or if the system controlling the relay is good, or if the pump is delivering sufficient volume.

The Prime function (2-second run you hear before crank) bypasses the fuel pump relay.

The relay NO contact ("87") is actuated by the PCM (powertrain control module) during start and run; verify pump gets power while cranking. You can also jumper across relay - Terminals "30" (+12V in) and "87" (not "87A"). Temporarily, of course, but OK for many minutes.

PCM uses several inputs to decide if pump runs: If engine speed <~400 RPM it shuts off, for example. PCM grounds terminal "85" to close relay, you should have +12V at terminal "86" all the time (or at least with ignition on).


The genuine Ford manual will have both diagnostic trees you can follow and a basic explanation of how it works. At least my 98 Windstar manual did. Note that the Electrical Troubleshooting Manual (wiring diagrams) was a separate book for my Windstar.

So dd that check and we'll see what to do next based on the result.