fuel pump blues

Was having a hard starting issue on my 96 RMW. Put a gauge on it and had to cycle the pump 3 times before the gauge would move. So I put in a Delphi pump assembly and car had pressure right away. Hard starting issue solved. Car ran and drove great. A week later I went to take off from a light and the car almost stalled. Couldn't get to the gas without it wanting to die. Put the gauge on it and barely 10 psi. So I changed the regulator and nothing. This past Saturday I installed another Delphi pump assembly. Drove around all weekend and to work this morning. Went to leave work and it wouldn't start. Put the gauge on it it barely reads. Could I have gotten 2 bad pumps?

Probably not. You might want to look into a power supply problem (low voltage, bad ground or relay etc.), or a tank cleanliness or venting problem.

I don't know if this would be accurate but I disconnected the pump where it plugs in at the back of the car and hooked a battery to it with a gauge hooked up. And nothing. I have 12v at the pump and at the relay.

Did you check the ground wire? Having 12 volts does nothing without someplace for it to go. You should also check for resistance. If you have 12 volts, and large resistance in the wire, it will not conduct enough current to run the pump.

I would suspect a wiring problem. Check all components and wires in the circuit.