New weird issue

jhdeval said

Ok so my theory is correct. If I can get it started if the ECM gets HOT to the touch I can take a guess it went bad. The grinding I am not sure is directly related I still think it may be my emergency brake line scrubbing on the driveshaft. Not totally sure though.

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It has a aluminum heatsink on the top because it does generate heat.
At some point it wil get so hot that the gel coat will run off of the back.
It must be properly chassis gronded too. If you do replace it bolt the new one down before attaching the harness connector.