I checked and there is no cut-out switch on the '92 Tercel. Perhaps I'm just not pressing the clutch down hard enough every the time.

(It's manual.) But it seems to be a change: I never had this issue before, and it has suddenly appeared over the last few months. Of course, my life has been filled with many good things in the last few months. Perhaps a thoroughly content person does not push their clutch down as hard...

Anyway, if anyone turns up any data on the subject, or has any suggestions, I'm all ears. And thanks to Gator2764 for the input. It really could be an ocassional failure to press the clutch hard. Parmenides3