So yesterday I posted a message about how my Miata overheated at an autocross school (many runs back to back). Read all about it here.
Long story short -- was able to limp it home by running the heat / pulling off the highway a couple times / taking it slow. Eventually made it home. Temp gauge was reading normal by the time I got home. No issues since. Mechanic found nothing wrong today.
At one point when I pulled off the highway during that ordeal, I cleared a chunk of trash off the radiator. It looked like dryer lint and was maybe 1.5" x 5".
Could a piece of trash -- that seemed like not such a big deal at the time -- have caused all that trouble?