I offer no opinion as I am not a mechanic. Just encouragement. Just don't overheat it getting to the emergency room. On maiden voyage of my bus, engine run relay had gotten corroded and shut our bus down on the interstate. Three times! I'd wait 5 minutes and it would re start? It took 6 calls to 4 guys to diagnose it. I disconnected the engine shut off since all fluids and temps were good, and drove 2 hours (worried sick the whole way) to a good bus guy. New relay installed. Aaaaalll better.
You are in that worried sick part of this thing. They will solve it, but until then, you get a bad stomach, think about selling it since nobody can work on these old buses. Wonder why your fan was put in backwards and why a second mechanic couldn't see that.....
Hang in there. They will fix it, temp readings will be normal, you'll be back on the highway and all will be well in your world again...
It is just a fan problem. Not a tumor.
Hang in there! It will work out.
Best regards, Ted
