Why does my car start but die at idle? It cuts off every time soon as it starts? on 1993 Lincoln Mark VIII

Car dies at idle when i start it.. recently replaced idle air control valve for another problem but i was told that this problem may be my fiel pump but im not sure. Looking for input please!!!!

Asked by for the 1993 Lincoln Mark VIII
Clean throttle body or have it cleaned. Possible vacuum leak!
Cleaned throttle body. Other than visually inspecting my vacuum hoses is there another way to find a leak in them?