If the engine stalling occur when the engine is hot the most probable cause is a vapor lock, this is when gas boils before it reach the engine, when the engine is extremely gets hot, the gas boils and an air bubble is formed which causes the air/fuel mixture to be too lean, too much air and not enough gasoline, thus making the engine to stall. When you experience vapor lock, just let the engine cools down, have a mechanic to check your cooling system it might cause the engine to get extremely hot.
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what vehicle? injector pulse controlled by computer. the computer recieves a pulse from crank angle sensor, or distributor pick up, etc. then controls injector pulse. Mass air flow on some vehicles determines spray pattern
2.3 V-6? You should be a 2.5 V-6 whether you have a TBI (throttle body injector) or sequencial, If there is no injector pulse then move your inspection to the distributor, there you will see a distributor pick up, this controls spark and fuel, and yes the rule is if there is no spark then there is no fuel but you case is special you have spark and no fuel pulse,you will need to inspect this for corrosion as it can give spark and no fuel injector pulse,that is one area of no injector pulse, Then inspect the MAP sensor (your a spped density), the most common complaint for a map sensor is it start then dies. inspect this sensor its mounted on the firewall make sure the vacuum hose is connected, and that it is plugged in.
Check all injectors with a needle stethoscope. Unplug electrical connector of bad injectors, and check the signal with (injector check light). The light must pulse. If not might be a bad computer. If yes replace bad injectors with new one. Hope will help. This is a free advice. Do not rate me.
check your fuel delivery from the pump to the "dry" pulsing injectors leave the crank sensor alone! open the intake and, spray either (engine start) into the engine then attempt to start; it should start and, run until the either is used up then die. most likely your fuel filters are clogged
the injectors are fired thru the engine cotrol module but it gets its signal to fire from the pick-up located inside the distributor if you are loosing injector pulse only the ignition module is bad if you are also loosing spark when you loose injector pulse your pick up is causing the problem if you replace the pick-up i recomend you change the ignition module when doing so because they work together and you have to remove the distributor to change the pick-up