Re: Melting
I had a similar issue with an ECU.
As opposed to Austin Maestro* ECUs, it wasn't so much the solder melting as not being there in the first place! The temperature gauge showing fully hot permanently wasn't the problem, the fact that the electrically operated choke didn't trigger as a result was. Simply fixed, take apart, resolder everything and reassemble.
*It was cheap when I needed a car at short notice. Sold it a year later for almost as much as I'd paid.
Biting the hand that feeds IT
