we have a pretty old Polaris Sportsman 500 and when ever we ride it the red light will come on farily shortly after ridding it and the clear bottle with the over FLow? is boiling.... thank you for any help you can give.

Ray

 

I am dealing with the same issue on my 2005' 700 EFI as we speak. So far I ruled out that it is not my fan. My fan wasn't turning on and thus overheating. Unplug the connector on the left side of the block (temp sending unit) and turn the key on. If your fan is blowing than you can rule that out. I can leave that unplugged and it won't overheat. I am checking right now if and how to replace the sending unit... I'll let you know what I find out... Jeff

 

OK THANKS

 

Advice I received from "Old Tech Pro" on replacing the temp sending unit - if this is true for you as well.
"Sending unit screwed into bottom of radiator,just unscrew,replace, plug in,check/bleed air in radiator,fan should cycle on and off with NO hot light."

 

Did you fix the problem? I fixed mine - if you still need help post again and I'll walk you throught he steps I used... Jeff