[Roadtrip]

The Exhaust Temp light is a function of cat converter temp. If the mixture goes too rich or the engine is under very heavy load for a long time, the cat can overheat . . . . light comes on . . . . you slow down, lighten engine load, or cut off the engine to allow the cat to cool.

Boggs, you are a man in dire need of an Owner's Manual. Check your PMs.