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Discuss polairs overheating in the ATV & DIRT BIKE RELATED DISCUSSIONS AND INFORMATION forums; have a 2008 400ho sportsman that is over heating the fan works i,m thinking the temp sensor is shot how ...
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07-26-2009, 01:22 PM
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| Member  Join Date: Feb 2009 Location: edmonton
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 | polairs overheating have a 2008 400ho sportsman that is over heating the fan works i,m thinking the temp sensor is shot how do you test it |
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07-26-2009, 07:14 PM
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| Re: polairs overheating check your rad fins if any are bent thats probaly your problem if you wash it with a pressuer washer you will get bent fins.
__________________ 1990 Polaris Trailboss 250 2 stroke 4x4  stock for now but zillas and a pipe in the spring you will hear me before you see me |
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07-26-2009, 09:12 PM
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| Re: polairs overheating From 2005 and up, polaris has had problems with ecms. The ecm controls the fan. The fan could not being staying on long enough to cool down. The next time the fan kicks on, count how long. Call poo and see if there is a update for it. Hope this helps.  |
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07-26-2009, 10:55 PM
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| Re: polairs overheating your rad is probably full of mud and dirt causing it not to get enought air flow. it may look clean but usually its not.
__________________ 2008 Polaris Sportsman 800 EFI - Polaris LE wheels, 1.5" wheel spacers, 27" outlaws, front ranger springs, 2500# Polaris winch, front & rear Polaris bushguards, front & rear Polaris rack extenders, Polaris hand guards, reverse override, fan on/off switch, 3 headlight mod, nerf bars, Heel Clicker clutch kit, HSP exhaust, Power Commander III 2010 Polaris Dragon 800 155 - s/b tunnel bag, bogie wheel kit |
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07-27-2009, 05:33 PM
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| Re: polairs overheating mine did this as well and started shooting coolant out instead of putting stock coolant back in i put engine ice in it and replaced the fuse and coated it with utv grease and havent had a prob since |
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| The Following User Says Thank You to stowe8807 For This Useful Post: | boiler146 (08-13-2009) |
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08-05-2009, 04:02 PM
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| Re: polairs overheating My machine is older but I had the same problem- every time I went even a mile, I started pissing coolant. Mine turned out to be a head gasket and a plugged rad. We thought the rad was clean but was SO full of crap. I was also told by the dealer to check the rad cap.... |
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08-12-2009, 12:43 PM
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 | Re: polairs overheating Originally Posted by dirtball08 NO ECM ON THE 400HO ! If you;ve been in the mud, clean the BACKSIDE of the rad.
__________________ FOR WHILE I HAD A SPLIT PERSONALITY BUT I'M OK NOW, & SO AM I  09 Polaris Sportsman 550XP, E-Tatou Tracks, Lock & Ride Cargo Box & Windshield, 3000 lb Warn Winch 08 Polaris Sportsman 400HO, E-Tatou Tracks, Lock & Ride Cargo Box & Windshield, 1500 lb Warn Winch. |
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08-13-2009, 12:43 PM
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| Re: polairs overheating Mongrol, There is an ecm on 2005 up as I had to take my 450 in for the recall on it.
__________________ 2-2006 Polaris Sportsman 450 1-1990 Skidoo Mach 1 1-1991 Yamaha Phazer Hauling with 2001 F350 7.3L Extended cab/extended frame 2006 32' Zinger trailer with 15' slide sleeps 10 |
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08-13-2009, 01:19 PM
| #11 (permalink) |
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| Re: polairs overheating You are probably right for that machine but the 400HO has no ECM. Its carbed and has CD ignition. Thats why I bought it, no computers.
__________________ FOR WHILE I HAD A SPLIT PERSONALITY BUT I'M OK NOW, & SO AM I 09 Polaris Sportsman 550XP, E-Tatou Tracks, Lock & Ride Cargo Box & Windshield, 3000 lb Warn Winch 08 Polaris Sportsman 400HO, E-Tatou Tracks, Lock & Ride Cargo Box & Windshield, 1500 lb Warn Winch. |
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08-14-2009, 02:55 AM
| #12 (permalink) |
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| Re: polairs overheating Your problem and your many future problems with your Polaris can be easily solved with some unexpensive items. Jerry can of gas and a Lighter. 
__________________ 06 Yamaha YFZ 450. FMF Factory 4 full exhaust with power bomb, K&N Air Box and Filter, Dynojet Stage 2 Jet Kit ITP rims. 93 GMC 1500. Bagged to S**T 81 Polaris 440!!!! YEHA |
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