Stupid question, but I'm still asking

gunbunny said

The current ECU is "melting" the potting off the back of it.

Click to expand...

Lol, some can be in a box on a shelf and bleed out. No need to be on a running vehicle.
I've posted pictures of this one in various stages of its melt down.
This is how it looks now......



Same ECU February 2020......