1996 Saab 900s runs great when running but stalls as if out of fuel

1996 SAAB 900

Stalls as if out of fuel

My 1996 Saab 900s 2.3 will with out warning stall weather I’m driving or parked. I replaced fuel pump and filter, coil and spark plug wires, don’t know where to look next, any advice would be appreciated. Runs great when running only 133,000 on it

Fuel Pressure regulator maybe. I would start by connecting a fuel pressure gauge and taping it to the windshield. Test drive and monitor the fuel pressure when it starts to stall. Compare your readings from when it is running well vs stalling out.