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does the cel turn on with the key on then immediately shut off without trying to start the engine? if so, pcm shutting down. 5 volt reference from pcm to input sensors could be grounded/shorted to ground. unplug each input and see if change in cel light status. if light stays on, attempt to start engine with sensor(s) unplugged. pcm will set default parameters and engine should start. what i seen before is the exhaust back pressure sensor shorting internally causing a no start by shorting 5 volt reference to ground and pcm shuts down.
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1995 Ford E350 cutaway, 7.3L DI Turbo, E40D, 4.10 Posi, SRW, ambulance prep package. Wheeled Coach box.
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