I have a 196 dodge ram van 2500 custom, 336,000 miles on it all original.

The Auto Shut Down (ASD) relay *must* be energized before the engine will start!! ASD relay ground circuit IS supplied via PCM. I’m thinking black wire with white tracer.

I do have wiring diagram I will check the ground feed and the power to the ECM. If they are in good condition do would you replace the ECM?

Not until all other possibilities have been investigated. Make SURE the ASD relay is turning on .. You’ll need to check for ground ‘from’ the PCM ‘to’ the ASD. IF the ground circuit has failed ‘inside’ the PCM - there IS a way around that - I’ve done it! Now you can’t just simply ground that circuit to metal - but it is doable. Let me know.

I will do that, thanks. If it does not work then may I get in touch with you then??

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