nope, talking about the temp of the winch's electric motor... electric motors generate heat the harder they work, heat is their #1 killer.

basically the only way to tell is by touching the motor. it will get hot! too hot to touch on a heavy pull. best thing you can do is be aware of the heat buildup and stop in between hard pulls to allow some heat to dissipate. this especially applies if you're using syn. rope instead of wire cable as the cable is actually acts as a heat sink drawing heat off the drum and away from the motor.

some of the new warn winchs have thermometric indicators for these reasons.

-Rob