1992 subaru loyale starts and runs for a seccond then dies

[Issac]

I recently baught a 1992 subaru loyale for $200 and have been filling it full of parts and I replace the entire throttle body bc it was cheaper then replacing the fuel pressure regulator and it ran great for 1 night then the next day it starts idles for a few secconds then dies and I notices when it did run fine it idled at about 1k rpm is that normal any help would be amazing

[1 Lucky Texan]

maybe the big hose from the intake air control valve to the intake box/tube has fallen off?