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Could be Crank Sensor because, if the vehicle doesent see the engine turning it will not turn on the fuel delivery system thus not activating the fuel pump or injectors.

Ignition Control Module because they do fail usaly just because but don't take the wireing or other sub systems for granted.

Also check all the fuses in the vehicle look for fuses marked with IOD, ECU, Ign, TCM.

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Q: 89 f-150 5.0 no injector pulse?
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