i have a 2006 500 ho x2 with 26inch tires...i just bought this quad and i took it for a couple of rides but i'm on it pretty hard in the snow 50-100% throttle sometimes for a few minutes in the snow in AWD and it over heated a couple of times going up hills...i since cleaned the rad really good and the fan still comes on....is this normal....should i changed the coolant to "engine ice" coolant?

 

even in snow if the rad. gets plugged some what it might over heat when your hamming on it and really not going very fast too get the air flow. but at least you know the fan is working. the only thing about using the after stuff like engine ice or what have you is too make sure it wont freeze up as it brings the freeze point up i beleave. imo.

 

Does the "Hot" warning light come on or how do you know it is overheated?

 

yea the engine light comes on saying hot and detunes the engine a lot.....i'm going to take another ride tomorrow...it will be the first long after really cleaning the rad good and i'll report how it went

 

My 800 was overheating like that, dealer ended up replacing the thermostat and it actually had a leak in the water pump. It was all covered under warranty, so it wasn't too bad. No problems since.

 

does it "detune the engine" by design when it overheats. This summer my 2008 SP500 X2 overheated and I noted the engine ran like crap. I wasn't sure if this was a direct result of heat or something initiated purposely by the ECU to prevent damage.

On mine I had cleaned the radiator from the front - however, I didn't get the back side. A quick trip back to the house - a thorough cleaning - and things were fine. My lesson learned was to make sure I thoroughly clean BOTH sides of the radiator. At the same time I removed the plastic "grill" that goes over the winch. I figured this would allow more air flow. (The thing kept popping off anyway).

Now that it is winter - my rad is clean - and the fan does cycle even when it is 10-degrees out. I believe this is normal. I did install a temp gauge to monitor the temp as a extra bit of comfort.

<div class="FTQUOTE"><begin quote>Originally posted by: linkandcuff

yea the engine light comes on saying hot and detunes the engine a lot.....i'm going to take another ride tomorrow...it will be the first long after really cleaning the rad good and i'll report how it went</end quote></div>

 

i dont know if it actually detunes as you call it or its just so hot that is automaticly looses power like most air cooled engines when there running on the hot side. maaybe our resident polaris mech. can tell us for sure.

 

well went for another ride and this time it was only 1 degree outside when i started and it said hot on the display again...this is after staying pretty steaduy on the gas for awhile but i really dont think it should over hear even if i was wot for 30mins in this weather....i called polaris to price a t-stat and they said 65$!!!!! no way...anyone know what i should do next to fix this problem

 

<div class="FTQUOTE"><begin quote>Originally posted by: linkandcuff

i have a 2006 500 ho x2 with 26inch tires...i just bought this quad and i took it for a couple of rides but i'm on it pretty hard in the snow 50-100% throttle sometimes for a few minutes in the snow in AWD and it over heated a couple of times going up hills...i since cleaned the rad really good and the fan still comes on....is this normal....should i changed the coolant to "engine ice" coolant?</end quote></div>
<div class="FTQUOTE"><begin quote>Originally posted by: linkandcuff

well went for another ride and this time it was only 1 degree outside when i started and it said hot on the display again...this is after staying pretty steaduy on the gas for awhile but i really dont think it should over hear even if i was wot for 30mins in this weather....i called polaris to price a t-stat and they said 65$!!!!! no way...anyone know what i should do next to fix this problem</end quote></div>

You may have answered your own question. My 400HO runs all day long in deeps snow with the rad covered in snow and no overheating.

 

What a minute MONGROL, I thought you rode on top of the snow? LOL...LOL

R'