450i 2016 issues/coolant

[airshot]

Being newer yours may be different, on my 2015 there is a small dia rubber hose comming off the top of the diff housing that acts as a vent.  Mine cracked right where it connected to the diff housing, noticed it was cracked when changing the diff fluid.  Check you manual to see what it shows. When I get vack out to the varn I will try to get a pic.  Wife just had major back surgery so I am not getting out there very often.

[randyo]

Being newer yours may be different, on my 2015 there is a small dia rubber hose comming off the top of the diff housing that acts as a vent.  Mine cracked right where it connected to the diff housing, noticed it was cracked when changing the diff fluid.  Check you manual to see what it shows. When I get vack out to the varn I will try to get a pic.  Wife just had major back surgery so I am not getting out there very often.

I hope your wife gets healthy soon,  I feel better now knowing I am not the only one that fat fibgers the keyvord

I just had a couple procedures myself, nothing major, replacing a battery in a neurostimulator turned into replacing the unit and lead, and the lead a second time (my ass is sore) but it's kept me out of my barn too. I did discover, the narrow seat of my K-Pipe is comfortable to ride. My 450i still has the plow on it

[airshot]

Yea....damn little buttons and very fat fingers, no matter how many tines I proof read, my fingers fall over each other !!!  Arthritus doesnt help either....

[kryptekman]

I checked my Fan fuse again today, blown!

I have a feeling the fan is never going to work until I get this blowing fuse problem. I dont want it to overheat eventhough we are only in the 50s in alaska currently.

[airshot]

See if the fan turns freely, sometimes crap build up and restricts the fan and that can blow a fuse.  Check the wires at the fuse block my became filled with mud and water and corroded everything which blew fuses.  After sittting overnight the battery should read 12.6 volts or higher to be full.  Unless your using a lot of fuel, I would keep some fuel stabilizer in the fuel tank, with todays poor quality fuels, I wouldnt take the chance of getting crap in your fuel. Keep us posted on how your gettin along!!

[randyo]

See if the fan turns freely, sometimes crap build up and restricts the fan and that can blow a fuse.  Check the wires at the fuse block my became filled with mud and water and corroded everything which blew fuses.  After sittting overnight the battery should read 12.6 volts or higher to be full.  Unless your using a lot of fuel, I would keep some fuel stabilizer in the fuel tank, with todays poor quality fuels, I wouldnt take the chance of getting crap in your fuel. Keep us posted on how your gettin along!!

I get pine needles caught in everything, and there  a bugger to get out

[airshot]

Yes they are, while I dont have many around home, when we ride p in N Mich, that area i full of pine trees and those needles wind up in places you would never think.  Found a hand full in my closed glovebox and stuffed between aeat back and bottom, poking me in the ass!!

[kryptekman]

I pulled each fuse from the Relay under the driver side hood. About half were caked on the outside with mud/dry dirt and half were dirty on the insides. Sprayed them down with QD Electronic spray and some dielectric grease after cleaned up.

Got out the ryobi washer and hit the fan grill and made the fan spin with the waters force.

Put a new fuse 10A in the fuse tray next to battery and went for a few miles.

No burned fuse yet.

She was hot enough but still no fan action, I dont want it to boil over again and possibly kill my new used toy. How can I test if the fan itself works on alternate power source or by hot wiring it, please be like Electricans for dummys type of explanation cause I am stupid and dont understand most of what Im trying to diagnose/repair.

[CROSSBOLT]

Find and check the inline EMI filter in the fan circuit anf the ground.

[kryptekman]

Find and check the inline EMI filter in the fan circuit anf the ground.

Im sorry what? procedural wise how and what to check for, debris or a voltage. I have the service manual, but even that is vague.

[CROSSBOLT]

Im sorry what? procedural wise how and what to check for, debris or a voltage. I have the service manual, but even that is vague.

I only SUSPECT yours has one since the DT300i and the UXV500i have one. An EMI filter is stuck in the circuit to the fan motor to "smooth out" the disturbances to the power source by the motor running. Electro Magnetic Interferance (EMI) can upset the operation of the ECU or so the design twidgets think. The one on my UXV500i failed open circuit one summer while towing a mower deck cutting a field of grass. Temp light came on and I realized the fan was not running.

What to do? Up the hood and look! Wires from the fan ran into a cube that said "EMI FILTER" and the plugs for this thing were made to be plugged into each other without the filter in the  circuit!  That is the way they are today, years later and the fan operates properly. You may have the same problem....

[airshot]

Not an electrical wiz, but on my machine there is a plug under the fan on the backside of the radiator. Pull front tires to reach it, you might be able to jump there to see if the fan is good. I do know there is a thermal switch to make the fan come on but you will need the wire dia to find its location.

[kryptekman]

Thank you Airshot and crossbolt for the replys,

I will check that area and see what i can find, i was able to find some replacement emi filter online in the states for like 40$ I might just purchase that.

Or, I was on a hilly billy fix dream last night, what if I remove the old fan, and replace it with some 140mm PC Fans, like 3x3 in a square grid that runs off the UXV's battery and I toggle a switch whenever I feel it might be warm.

In alaska there is literally nobody who services these and I could pay a local guy to take a look but our riding seasons are so short i cant justify even a few days down haha. So im hoping the EMI filter looks really bad and i replace it, or i might go down the hilly billy fix road. 

[airshot]

Lots of folks just add a switch and turn on the fan when riding slow. Simple, quick and easy....but if your anything like me it bugs you that it doesnt work like it is supposed to!!!  I would have to figure it out.  Before replacing your fan see if it actually works first...I was out spraying weed killer with my 450i, the sprayer hold 30 gallons plus spray equipment, going very slow, less than 5 mph and frequently stopping to hand spray areas with a wand. It was almost 90 degrees here, fan kicked on a few times but as soon as the machine moved along the fan stopped !!  My point is dont expect your fan to come on very often..when I trail in the woods it rarely comes on unless I am crawling along at walking speed.  By all means get the fan checked to be sure it does work !!!

[CROSSBOLT]

Thank you Airshot and crossbolt for the replys,

I will check that area and see what i can find, i was able to find some replacement emi filter online in the states for like 40$ I might just purchase that.

Or, I was on a hilly billy fix dream last night, what if I remove the old fan, and replace it with some 140mm PC Fans, like 3x3 in a square grid that runs off the UXV's battery and I toggle a switch whenever I feel it might be warm.

In alaska there is literally nobody who services these and I could pay a local guy to take a look but our riding seasons are so short i cant justify even a few days down haha. So im hoping the EMI filter looks really bad and i replace it, or i might go down the hilly billy fix road.

What I am saying is IF the filter is bad and is keeping the fan from running, the plugs may be made to bypass the filter.
We did a switch for a neighbor's Honda 4-wheeler. This neighbor is a farmer and he WORKS that 4-wheeler! The nearest dealer had the thing for a month and could not find the cause so they wrote up a spark plug change just to bill him and get him out of the shop. Did not fix his problem and he needed it so we rigged him a switch, bypassing everything. Straight from the battery with its own fuse. Keeps it from overheating at slow speeds like already mentioned.