1994 Chevy S10 Blazer 4.3 V6 engine running abnormaly hot changed water pump thermostate temp sensors and flushed if its over 80 outside engine shuts down after 30 min of driving any advice?

I just checked my Haynes manual and it suggests if the water pump has been replaced in a 1897 or later with a serpentine belt and a reverse rotating water pump it might have been replaced with an earlier, normal rotating water pump instead of the reverse rotating type. It also suggests the radiator cap not maintaining normal pressure, fan not functioning properly, radiator core blocked or radiator grill dirty and restricted, drivebelt defective or not adjusted properly.