Toyota Repair: 1993 4runner stalls when hot, air flow meter, signal wires

Question
93 4runner auto 4x4 3vz.vehicle starts & runs fine when it gets hot engine shuts off just as if you turned off ign.code 14 present check engine light not on.no igf signal.wires from igniter to ecm ok.igniter,coil,dist all new fuel pressure ok 38-40psi.when it dies out fuel press does not change.also swaped out.air flow meter,& ecm.at times it will start up right away,but @ times crank & no start.when no start spark firing also injector pulse all ok.checked all splice on wire harness from ecm connectors through fire wall redid all splice points in that area.i tryed unpluging ect to run in fail safe still dies out did the same with tps,&o2 sensor.also checked pin drag added tension to 2 pins @ igniter,&1 pin @ ecm.Any info on a problem like this,don't know what else to check. Jay D...

Answer
there are two wires that need checking. IGT and IGF.
IGT = Ignition trigger. If you have spark, your IGT is good.
IGF. = Ignition fire. The ignitor tells the ECU the plug fired and the ecu supplies a fuel pulse to the injectors.
If the wire is good, I suspect it is because its a HOT only problem, then I would replace the ignitor.

Mike