Be far too old for that system. They came much much later on.If one was installed, yes.
When you turn the key to the run position without starting the motor does an alarm sound?
My 1990 vintage 3.0LX/Gen one had one. Never over heated but the switch failed and I had to snip the alarm buzzer wire when I was out on the water one day...overheat alarms came out much later than your 1990 or earlier 2.5 liter