If the pump is properly installed and provides the fuel pressure needed, it should work. Have you checked to see if there are any diagnostic trouble codes?
This vehicle has an OBD1 system which doesn't require a scan tool. All you need is a short jumper wire or even a paper clip. Follow the directions listed below and let me know what you find.
Also, here is a link that explains how to test fuel pressure. On this vehicle, you will need to place a T in the fuel supply hose under the hood and then attach a pressure gauge to that T.
I attached the directions below specific to this vehicle. They include the manufacturer's fuel pressure specifications.
Let me know.
See pic below.
Saturday, December 3rd, 2022 AT 11:45 PM