ktm duke overheating - radiator fan test & fix 

it was an odd one t figure out . i was quite happy its not a bad fan. just connectors

ktm is a never ending repair bike

@@MechanicsDIY lol I agree. I have a 2011 ktm duke 125cc and I have put into repair +1100$. Know the struggle

see min 1:06 2 polarity dose not matter - will show -1 or 1 if the relay switch is dead then it will show 0 . *important : clean the connectore before testing .

@@MechanicsDIY Big thank you.!

the fan kicks in via a thermostat (temp) sensor if the sensor gose bas it might cause issues of this type . if you can use another fan to test it you will know for sure the sensor is on the fan as far as i know and looks like a small black beed of glass with 2 wires coming out of it

same issue have you fixed it?

the fan have a small sensor that looks like an led with 2 wires on it ( a thermostate ) if the sensor is dead the fan will not shut off as a protection feature you need to test that unit to be sure ,

ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-L2obD9ZXrsw.html you can try - at your own risk

the 2018 cooling is better on ktm dukes in this video the fan did not work at all , due to a wire connection gone bad - the currotion prevents conductivity once the connectors was cleaned with contact cleaner (not wd-40 oil) and sandpaper the issue was solved and the fan was back,

Bro same problem here Can u tell me what was the problem and how did u manage ur problem.?

take one that works that have the same numbers on it and replace between them - and see if it helps there are at least 5 or more relays on the duke

about 5-6 bars only . not before

@@MechanicsDIY thank you Sir, how to identify if the fan is started, because in city traffic often the sound is unheard.

sounds like a faulty ecu the computer / or one of the relays gone bad not sure since i never had that issue

same with me..own duke 200.. just buy 2021..the fan only works at high of the bar

ktm shuld not idle it needs air to coll via riding , get 10w60 4t oil if you want less heat and use proper green coolant -------------------------------------------------- also if it's 37c outside on a hot day do not ride fast on low gears first gear 0-15 km second gear 15 -40 third gear 40 -60 forth gear 60-80 fifth 80 -100 kip on 7000 rpm it will ride cooler at night you can ride more crazy , oil level test every day and enjoy riding ,

make sure your heat sensor wire on the radiator is attachet to the rediator if it's fallen it will take longer for the sensor to feel the heat also you might need to replace it if it's bad ( it's very cheap 12v heat sensor wire

Where does it located?

@@idhammuchtar6870 you can see the heat indicator on the left side of the panel dash board.

@@balbonstv4784 i mean the heat sensor wire.

even if it's working it will only start when you have 6-7 bars of heat this is how it is on this model and it's normal

ktm reccomend 10w-50 4t . i use liqui moli brand ( made in germany ) unsponserd . 10w-60 is better but cost more . it kips the engine 20% coller under hard work . and gets fluid faster on cold days . from my experience .

@@MechanicsDIY thank you so much brother and how much is the price for 10W-60 oil?

@@gamingwithmuyal usaly 4 litters is cheaper then 1 - the oil engine capacity is 1.6 litters . about 1 litter is about 15 $

bro same mine have you got solutions

. ktm duke 5 - 7 bars is normal be sure to test oil level often small window in the engine gear case shuld be full 80% with small air buble on top to test hold thje bike in ride position on a leveld ground

the radiator is cooled by the air flow generated by driving at 50km or so . and not at 10 km . using the first gear too much and doing some vooom.. voom... for the chicks . will raise the engine heat . maybe you'r also using the wrong type of oil (ktm duke 125 is using 10w50 4t oil) / cheap coolant . that reduce preformance . in any way .. usualy low speeds + high rpm = engin heat goes up fast on ktm.

bro i am using 20 w 50 but still my bikr heat at 10 km. raditr fan works but still heat

Hlo Sir, my bike also heat up when I drive 10-15 km,when my bike is heated some loude noise is coming…..!!

ktm not supose to idle they are air+water cooled no ride = no cooling

if your engine's oil is low quality or old it will cause engine heat . oil flash is cheap to do

ps old ktm duke 2011 only kicks in on 7 bars of heat if you have this - it's no problem but if the heat rise up fast new coolant and engin oil is needed

clean the connectors shown in the video contact cleaner and sand paper only

if fan is not turning on clean the connector it might be just water damage that is fixed by cleaning to test the fan use 12v battery on the connector

is this a bot comment ?

It can be in Russian

the fan wasn't turning on the cause - rain got in the connector and it stopped conducting once the green/ black stuff was removed (connectors are brass) it started working again the meter shows same both ways apart from the - minus mark