Welcome to the forum! There is no electric pump on these motors. The pump is on top of the motor and run by the cam. What I would suggest is filling the bowl back up if you can, I know it must suck being in a van there pry isn't a lot of room, but there a shrader valve on the side of the fuel bowl where you can use a stick type tire gauge to check pressure. I can't recall what the minimum pressure is. I'm sure the others will chime in with suggestions as well.
By the way where did you get the CPS? Parts store ones can be bad out of the box, and the only suggested ones are Ford or international. Also are you getting a wait to start light? And if you can post exact codes that may help too
Once again welcome.
1997 F-250 XLT HD CCSB 7.3 PSD E40D 4X4 373K and counting!
1988 F-150 XLT Lariat RCLB 302, AOD, 4x2
And too many others...