Re: How to Repair Relay Control Module (RCM) - (Mystery no Start)
That temp display is most likely a loose connection to the temp probe mounted in the driver side lower grill.
I don't however think that would cause the symptoms described.
If you are really ready to pull your hair out, trailer it over here and I'll do what I can to help you.
We can pluck known good things off my car and try them, or we can troubleshoot with meters etc.