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Polaris overheating problem
#8561413
03/21/22 07:42 PM
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Joined: May 2015
Posts: 1,403
Chunky Dunk
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2016 Ranger 900 with Razor rear end, monster axles and 31" tires. Built to run in the mountains elk and mule deer hunting. Any way the last 2 years when out in NM, it has started overheating after some hard use like 4 low for miles climbing hills. I shut it down and let her sit for a bit and cool off and then take off for the rest of the trip. Wasnt mud build up on the fins, i even pulled the thermostat, thinking it may be sticking. Still does it.
Now its starting to do it running around my lease with several bags of corn in the back. Im thinking that the radiator itself may be undersized for the mods i did. Any ideas on what to do will be greatly appreciated.
Another note, its started using some oil as well, not burning it or at least cant see any smoke. And no leaks under it. I think the valve guide seals are leaking by, but im not positive just yet, need to get it home and get the head off and take a look.
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Re: Polaris overheating problem
[Re: Chunky Dunk]
#8561493
03/21/22 09:49 PM
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Joined: Sep 2012
Posts: 12,861
PMK
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not familiar with Polaris ... but some things to check (I have on my RTV) radiator cap, thermostat (sounds like you already checked that? but my RTV will run hot with the thermostat removed), radiator clogged with dirt/mud/dust/weeds, is the fan operating properly (my RTV has 2 fans, one on front of engine, one electric behind radiator). Then more serious issues could be cracked head
"everyone that lives dies but not everyone who dies lived..."
~PMK~
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Re: Polaris overheating problem
[Re: Chunky Dunk]
#8561521
03/21/22 10:12 PM
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Joined: Oct 2008
Posts: 15,173
Tbar
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Gotta burp it. Park nose high(like 4-6'). Remove radiator cap and run the engine until the trapped air is dislodged from the block. The coolant level drops. Refill and drive to see if that helps. Could take 10-15 minutes.
Make America Great Again
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Re: Polaris overheating problem
[Re: Chunky Dunk]
#8561542
03/21/22 10:45 PM
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Joined: Jul 2012
Posts: 15,694
603Country
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Burping it finally solved the problem with a friend’s Mule.
Not my monkeys, not my circus...
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Re: Polaris overheating problem
[Re: Chunky Dunk]
#8561572
03/21/22 11:28 PM
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Joined: Aug 2010
Posts: 60,296
stxranchman
Obie Juan Kenobi
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Obie Juan Kenobi
Joined: Aug 2010
Posts: 60,296 |
Grass seed, brush/grass leaves and pollen can clog up a radiator to where it will do that.
Are idiots multiplying faster than normal people?
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Re: Polaris overheating problem
[Re: Tbar]
#8562022
03/22/22 03:38 PM
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Joined: May 2015
Posts: 1,403
Chunky Dunk
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Gotta burp it. Park nose high(like 4-6'). Remove radiator cap and run the engine until the trapped air is dislodged from the block. The coolant level drops. Refill and drive to see if that helps. Could take 10-15 minutes. Im definitely going to try this next!
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Re: Polaris overheating problem
[Re: stxranchman]
#8562023
03/22/22 03:39 PM
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Joined: May 2015
Posts: 1,403
Chunky Dunk
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Grass seed, brush/grass leaves and pollen can clog up a radiator to where it will do that. There has been some grass/seed and even some dust stuck in places. I cleaned it off best i could, the last time i was in it. Ill try cleaning it better with a water hose.
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Re: Polaris overheating problem
[Re: Chunky Dunk]
#8562024
03/22/22 03:40 PM
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Joined: May 2015
Posts: 1,403
Chunky Dunk
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Could it be that my radiator is not large enough, with all the mods and such it has to be putting an additional strain on engine? I started looking for an aftermarket radiator that is larger for the additional capacity.
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Re: Polaris overheating problem
[Re: Chunky Dunk]
#8564229
03/25/22 03:42 AM
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Joined: Aug 2010
Posts: 60,296
stxranchman
Obie Juan Kenobi
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Obie Juan Kenobi
Joined: Aug 2010
Posts: 60,296 |
Grass seed, brush/grass leaves and pollen can clog up a radiator to where it will do that. There has been some grass/seed and even some dust stuck in places. I cleaned it off best i could, the last time i was in it. Ill try cleaning it better with a water hose. Cleaning from the front only pushes the seed and pollen farther into the radiator....need to clean it from the backside of the radiator.
Are idiots multiplying faster than normal people?
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Re: Polaris overheating problem
[Re: Chunky Dunk]
#8571503
04/04/22 05:44 PM
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Joined: Aug 2009
Posts: 4,591
decook
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Chunky, read up on purging air from the cooling system. I don't know if this is the original issue, but it might be the cause of overheating now.
Press for an AMERICAN.
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Re: Polaris overheating problem
[Re: stxranchman]
#8571678
04/04/22 09:51 PM
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Joined: Jul 2013
Posts: 6,032
tlk
THF Trophy Hunter
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THF Trophy Hunter
Joined: Jul 2013
Posts: 6,032 |
Grass seed, brush/grass leaves and pollen can clog up a radiator to where it will do that. This - I buy one of those small window screens from Home Depot and strap it front of the radiator - catches all the seeds, etc. A lifesaver for sure
You can't fix stupid
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Re: Polaris overheating problem
[Re: Chunky Dunk]
#8572099
04/05/22 03:21 PM
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Joined: Jul 2013
Posts: 6,032
tlk
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Here is what I use - works like a charm for me
You can't fix stupid
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Re: Polaris overheating problem
[Re: tlk]
#8572363
04/05/22 09:29 PM
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Joined: Jul 2014
Posts: 6,324
onlysmith&wesson
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Here is what I use - works like a charm for me That looks nice, real nice.
An unethical shot is one you take, that you know you shouldn't.
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Re: Polaris overheating problem
[Re: onlysmith&wesson]
#8572386
04/05/22 10:14 PM
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Joined: Jul 2013
Posts: 6,032
tlk
THF Trophy Hunter
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THF Trophy Hunter
Joined: Jul 2013
Posts: 6,032 |
Here is what I use - works like a charm for me That looks nice, real nice. LOL I don't care what it looks like as long as it works!
You can't fix stupid
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Re: Polaris overheating problem
[Re: tlk]
#8572428
04/05/22 10:46 PM
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Joined: Jul 2014
Posts: 6,324
onlysmith&wesson
THF Trophy Hunter
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THF Trophy Hunter
Joined: Jul 2014
Posts: 6,324 |
Here is what I use - works like a charm for me That looks nice, real nice. LOL I don't care what it looks like as long as it works! I channel Cousin Eddie often. He's a philosopher of sort's.
An unethical shot is one you take, that you know you shouldn't.
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Re: Polaris overheating problem
[Re: onlysmith&wesson]
#8572502
04/06/22 12:55 AM
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Joined: Jul 2013
Posts: 6,032
tlk
THF Trophy Hunter
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THF Trophy Hunter
Joined: Jul 2013
Posts: 6,032 |
Here is what I use - works like a charm for me That looks nice, real nice. LOL I don't care what it looks like as long as it works! I channel Cousin Eddie often. He's a philosopher of sort's. yeah I can see that
You can't fix stupid
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Re: Polaris overheating problem
[Re: stxranchman]
#8573051
04/06/22 07:44 PM
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Joined: Jul 2008
Posts: 22,252
Texas Dan
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Posts: 22,252 |
Grass seed, brush/grass leaves and pollen can clog up a radiator to where it will do that. And flushing it out often takes getting the spray nozzle at the precise angle to ensure everything that's caught deep inside the fins will flush out. I thought I had a tractor radiator cleaned out once until an old timer told me to try again and make sure the water was being forced straight thru the fins. And dried mud may need to soak a while before it will flush out.
Last edited by Texas Dan; 04/06/22 07:48 PM.
"Some people will never like you because your spirit irritates their demons."
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Re: Polaris overheating problem
[Re: Chunky Dunk]
#8581377
04/19/22 08:57 PM
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Joined: Jul 2008
Posts: 3,805
Big_Country01
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If you use water to wash out radiator fins, follow it up with a blow out with an air compressor. That will keep the wet dust from drying and becoming caked dirt.
Im not sure on the 900, but i have a 2014 Sportsman 800. I had to replace the temperature sensor because the fan was not cycling as often as it should. Is your fan running when the high temp light comes on?
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Re: Polaris overheating problem
[Re: Chunky Dunk]
#8595840
05/11/22 10:45 PM
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Joined: Apr 2006
Posts: 907
bholt
Tracker
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Tracker
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If you haven't figured it out yet and still having issues with your Ranger Check out Polaris Ranger Club Forum (PRCForum) those guys know their stuff.
B Holt Shoot-em in the ear
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