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2012 rzr 900 cooling fan wont stay on

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overheating probs started early this summer - immediately realized the cooling fan was cycling on and then shutting off before the temp. was actually cool.        It should be staying on till the engine temp drops to around 180deg and it was shutting off clear up in the 200's.

 

Anyway, I got stuck in the mtns overheating and wired the cooling fan into one of the headlight circuits and she cools greatly, but was wondering what sensor tells the fan to turn on and off?

 

Anotherwords - which sensor do I need to replace?     engine temp readout on the console seems to work fine - but fan just won't cycle at the proper temps.

 

 

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Old post, hopefully you've figured it out by now.  The RZR's run hot anyway (especially in tight stuff) we do make oversize radiators for the RZRs-fits in stock location and hold more than 40% more fluid for more consistent cooler running.  Thanks!

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