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Polaris 800 Over heating #8059163 11/21/20 09:05 PM
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Riverrat33 Offline OP
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Any recommendations on where to take my polaris 800 that keeps over heating fan won’t come on unless it is over heating. I am on the west side of Fort Worth. Thanks for any info.

Re: Polaris 800 Over heating [Re: Riverrat33] #8059536 11/22/20 03:27 AM
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I’d bet the fan circuit breaker has gone bad.
Under the hood drivers side small rectangle 2 posts, I think 20a.
Decent parts store can match up ( Napa) no reason to spend dealer money.

Locate, remove, take with you to parts store.

Re: Polaris 800 Over heating [Re: Riverrat33] #8060009 11/22/20 05:14 PM
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Temp sensor in radiator is bad

Re: Polaris 800 Over heating [Re: Bbcat78] #8060060 11/22/20 06:00 PM
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Originally Posted by Bbcat78
Temp sensor in radiator is bad


That's what they found on my Gator. I have three. Fuses free to a good home.

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Re: Polaris 800 Over heating [Re: Riverrat33] #8060281 11/22/20 09:39 PM
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Originally Posted by Riverrat33
Any recommendations on where to take my polaris 800 that keeps over heating fan won’t come on unless it is over heating. I am on the west side of Fort Worth. Thanks for any info.


Confused about fan. My Gator fan cycles after it warms up. Does your fan run at all?


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Re: Polaris 800 Over heating [Re: Rustler] #8060692 11/23/20 02:43 AM
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Rustler, Thank you for the suggest I did Change it out l. Still not working 🤷‍♂️

Bbcat78, Thank you I will look into the sensor

Cast, The only time it will run is when the temp light comes on.

I might have more than one problem. I did direct wire the fan to the battery so it runs constantly. Even with the fan running it still wants to over heat and go into limp mode.

Re: Polaris 800 Over heating [Re: Riverrat33] #8061455 11/23/20 05:46 PM
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There's a guy out in Rowlett named Todd Kirby who runs a shop out of a building on his property, been there for years. Very highly recommended and very well regarded in the Polaris community. It'd be well worth your time to make the drive to see him. 972.896.1002 I've taken 3 bikes to him over the years, and he's always done me right.

Re: Polaris 800 Over heating [Re: Riverrat33] #8061471 11/23/20 06:02 PM
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Sounds like a radiator or water pump problem. Are your cooling fins on your radiator clean? If you take off your radiator cap is the water circulating?

Re: Polaris 800 Over heating [Re: Shotgun Willie] #8061495 11/23/20 06:22 PM
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Originally Posted by Shotgun Willie
There's a guy out in Rowlett named Todd Kirby who runs a shop out of a building on his property, been there for years. Very highly recommended and very well regarded in the Polaris community. It'd be well worth your time to make the drive to see him. 972.896.1002 I've taken 3 bikes to him over the years, and he's always done me right.


This. X2.

If the radiator fins are plugged / blocked nothing will work until it is cleaned thoroughly.

If an 800 over heats just a couple times it usually wrecks the water pump, I have seen one or two thermostats stuck closed but they heat up fast, like 60 to over heat in 2 - 3 minutes.

Re: Polaris 800 Over heating [Re: Riverrat33] #8061505 11/23/20 06:31 PM
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My Gator has a weed block screen in front of the radiator.

Let’s break this down.

Fan runs
Next verify air flow
Verify coolant level
Verify coolant flow


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Re: Polaris 800 Over heating [Re: Riverrat33] #8061583 11/23/20 07:14 PM
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What engine does your polaris have? Subaru/Robin?


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Re: Polaris 800 Over heating [Re: Riverrat33] #8061842 11/23/20 10:11 PM
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Newer ones are ProStar

Re: Polaris 800 Over heating [Re: Rustler] #8061957 11/24/20 12:08 AM
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Originally Posted by Rustler
I’d bet the fan circuit breaker has gone bad.
Under the hood drivers side small rectangle 2 posts, I think 20a.
Decent parts store can match up ( Napa) no reason to spend dealer money.

Locate, remove, take with you to parts store.

^^^ this. Buddy had the same problem. Fortunately the dealership told him what to do. Easy fix.


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Re: Polaris 800 Over heating [Re: Riverrat33] #8063251 11/24/20 11:57 PM
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Well after contact the gentleman I bought it from. He told me to take it to the dealership and he would pay for it to get fixed. I will keep y’all posted on the out come. Thank you for all the info.

Re: Polaris 800 Over heating [Re: Riverrat33] #8064158 11/25/20 04:16 PM
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It's good that previous owner is going to fix it.

One thing I have found on Polaris stuff is they usually have a air purge plug at the high point of cooling plumbing.
Locate that plug, remove it and fill radiator.
As radiator gets full, the air will purge from system thru the plug and water/antifreeze will eventually come out, then you put plug back in and finish filling radiator.
Fill the overflow tank to upper line.
After you heat cycle the engine a few times, you may have to refill the overflow tank to upper line.


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