my 78 280 cranks up good and turns over with no problem at all. but once the car warms up it dies ramdomly with warning. the easily turns on after, but the car will do this about a few more times and then will stay on.once i fill that its good i will drive it for a while but ramdomly again will die. i took it to a specilst but he told me it ws my AFM connections were corroded and causing the power to be cut. i clen it out nd it seemed better, but soon it happend again. my other option is my gas pump but how can i check it, does anyone have suggestions on what can it be and how you check the gas pump. HELP!!!!

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Connect a fuel pressure gauge between the fuel filter and the fuel rail and watch the fuel pressure while it's running and when it begins to and ultumately dies out. If it drops, you've got a probelem with the fuel pump, fuel pressure regulator, or somewhere in the fuel delivery. If it reamins constant at around 36.3 psi, the problem is elsewhere.

ill do this and get back to you on the results