Went riding this past weekend and RZR was running great. Left out for a poker run and after about a hour temp light came on as I was in the middle of a climb out of a steep hill. I think it went in limp mode, like it was running on one cylinder. Made it to top of hill and killed it, didnt really want to mess with it out in the middle of the woods. Got towed back to camp and by this time it was cooled down so I fired it back up and noticed the engine was hot but the radiator was cool? It was saturday night after a good weekend so loaded it up in the toyhauler and called it a night. Bad water pump? Stuck thermostat? Or air in sytem? Could use so help trouble shooting to see if water pump is working properly and also where is the bleed screw for burping the system? My over flow bottle has been empty for a while, could it have been sucking air in the system through the over flow bottle? The radiator being cool is got stumped while the engine is hot! Thanks for the help!!! Tim