04 Grizzly Overheating ???

[Diceman]

Was out on a poker runthis weekend..went about 3 1/2 hours on a rail trail, running some roads....turned onto a old road and was going slow for about 1 mile and noticed my temp light had come on...checked fluid and it was fine, rad did not look plugged ( we had gone in zero mud)....let fan run and within a minute light was off....started again and within 10 mitnues it came on for a short time then off..did this twice but then stayed off for about 2 hours...1 mile from the truck it came on and stayed on until I got to the truck....when I turned it off it was really hot....it was a rainy day and cool.......I was thinking thermostat but another guy says although the rad might look clean that is usually what it is....any suggestions ???Diceman

 

[MrSled]

check and see if the radiator is plugged with mud and dirt.

 

[SledderSteve]

Ditto on the plugged rad, they may look clean but those tight little fins really hold the dirt and the machine will show the symptoms described.