I haven't seen anything. I agree that the fan turns on a bit late to keep cool when stuck at a red light. But, if <127 F, it would be running all the time in our hot summers, even when not needed (AC clutch off). I do have several junkyard temp switches. I tested them all and wrote the "switch-on" temperature on each w/ a Sharpie. All were within +/-2 C. I recall ~60 C, but don't quote me.

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1984 & 1985 CA 300D's
1964 & 65 Mopar's - Valiant, Dart, Newport
1996 & 2002 Chrysler minivans