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01-30-2012, 09:09 AM
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ATV Enthusiast
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Member #22816
Join Date: Jan 2012
Location: Texas
Posts: 66
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2010 Polaris Sportsman 500 Overheating
I have a 2010 Sportsman 500 with only 26 hours on it and it is now overheating. I took it out this weekend rode for about 10 mins Hot Engine started flashing on the gauge, shut it down and looked underneath to see coolant dripping down. Also I have noticed that the cooling fan isnt running either. HELP!
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01-30-2012, 03:32 PM
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Super Moderator
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Member #193
Join Date: Feb 2009
Location: Port Angeles WA
Posts: 11,419
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Welcome to the board! 
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01-30-2012, 04:08 PM
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ATV Enthusiast
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Member #22816
Join Date: Jan 2012
Location: Texas
Posts: 66
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Just an update I unplugged temp sensor (above oil filter) and fan did not come on. I did supply power to fan and it does still work.
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01-30-2012, 04:37 PM
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Polaris ATV Legend
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Member #11982
Join Date: Feb 2011
Location: Douglas Wyo
Posts: 1,943
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sensor bad, have heard of a few doing this, might get dealer to warranty at least the part.
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01-30-2012, 05:00 PM
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ATV Enthusiast
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Member #22816
Join Date: Jan 2012
Location: Texas
Posts: 66
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the sensor on the engine or the sensor on the radiator?
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01-31-2012, 04:12 AM
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Polaris ATV Legend
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Member #11982
Join Date: Feb 2011
Location: Douglas Wyo
Posts: 1,943
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the one on radiator,
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01-31-2012, 05:15 PM
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ATV Enthusiast
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Member #22816
Join Date: Jan 2012
Location: Texas
Posts: 66
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anyone know how much resistance those sensors should have? thinking maybe i could put a meter on them to narrow down to which one is bad. Im assuming that the one on the engine is still good since its giving me a "hot engine" notification. But still curious as to why it wouldnt trigger the fan to come on. T-STAT maybe?
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02-01-2012, 02:30 PM
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ATV Enthusiast
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Member #22816
Join Date: Jan 2012
Location: Texas
Posts: 66
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Ok so I pulled the temp sensor off the radiator today after buy myself a multimeter. I put one lead on one pin and the other lead on the Other pin. No continuity, I then boiled some water and did the same test with same result. Does this confirm thy sensor is bad?
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02-01-2012, 04:18 PM
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Polaris ATV Legend
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Member #11982
Join Date: Feb 2011
Location: Douglas Wyo
Posts: 1,943
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here is a number for one from o' rielly's #17-1077 IDT take old one with you to make sure they are the same, may have to switch plug in from old one to new one.
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02-01-2012, 06:50 PM
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ATV Enthusiast
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Member #22816
Join Date: Jan 2012
Location: Texas
Posts: 66
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Thanks Russ, thats $10 bucks cheaper than my dealer and i can get it quicker. Ill let ya know if it works
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