1996 FORD BRONCO MANUAL 5.0 crank no start

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applied electret grease to the pcm and bulkhead connector, replaced the distributor electronics,r&r crank sensor,ignition mod on the driver fender, new plugs, all started when rain crank no start, replaced plugs ,crank sensor and distributer electronics no start next day started drove till next rain ,after rain no start, greased the pcm , bulkhead connectors started drove Two days washed and again no start, with air gun dried pcm n bulkhead connectors started 2 days driving engine started popping,loss power stalling with restart than died crank no start, has 40 psi fuel psi pump runs please help if can thank you