What is the volume supposed to be for a 2002 daewoo nubira fuel pump your engine stalls out in every gear at shifting rpm range any ideas?

The volume for a 2002 Daewoo Nubira fuel pump should typically be around 40-50 psi for proper fuel delivery. If your engine stalls at shifting RPMs, it may indicate a failing fuel pump, clogged fuel filter, or issues with the fuel injectors. It's recommended to check the fuel pressure and ensure there are no obstructions in the fuel system. Additionally, inspecting the ignition system and any potential vacuum leaks could help diagnose the issue.