Been driving my camaro around all day, stop at my apartments to pay the rent. I left it running as I went inside. Came back to my car, put in reverse and it starting idleing really rough and died. Start it up again sounds nasty and dies, giving it gas does nothing. Now it's 95* degrees today, temp gauge said it was 220*-230* could it be too hot to run?

1990 IROC
305 TPI
T5 tranny.
Everything stock.