12 miles. 3 times overheated
- Thread starter Starxz
- Start date
RC390 Fan
New Member
Just curious, where does the engine temp sensor live? I was just wondering if maybe another reason for the stock shroud directing hot air downward is to keep it from blowing directly on the head/cylinder area. ?
And if the temp sensor is on the radiator then maybe while the radiator is cooler with the new SPAL fan, the engine may not be.
Just a thought and I hope i'm wrong because I just ordered a new spal fan.
And if the temp sensor is on the radiator then maybe while the radiator is cooler with the new SPAL fan, the engine may not be.
Just a thought and I hope i'm wrong because I just ordered a new spal fan.
Fasteddy
Member
It's on the backside of the cylinder, and sends a signal representing temp directly to the ECU, The ECU is what is actually turning the fan off and on using adaptive software control, it's not just a basic thermostatic switch off / on with temp, The ECU is factoring in speed , load , temp etc. connect OBD II and drive around you can see it in action....
BetterThanStarxz
New Member
Keep us posted when you hear back from the dealer. Smokin' the engine coolant is never a good thing 
....... Hey buddy!
....... Hey buddy!BetterThanStarxz
New Member
So update from the dealer on my buddy's behalf. They are draining all fluids, have ordered a entire new radiator assembly (fan included), and "scoped the engine for damage" (if they even spent the time).
-No engine damage reported
I am expected to get the bike back soon and I just want to know what are some of the things I should be looking for? Such as misshaped hoses or noises or vibrations when riding? Again I'm new at this so anything helps, Thanks for all the help from the forum
-No engine damage reported
I am expected to get the bike back soon and I just want to know what are some of the things I should be looking for? Such as misshaped hoses or noises or vibrations when riding? Again I'm new at this so anything helps, Thanks for all the help from the forum
OldVet
New Member
Beside what you mentioned I would check every bolt on the bike; start the bike up and make sure the fan comes on when it gets up to temp and watch for leaks.
RobbiRob76
New Member
I'm the one who had the fan seize up at about the 850 mile mark. Warranty covered it, took a week to get it back.
RobbiRob76
New Member
No further issues... I dont believe the part is an improved piece.
Got the bike back Friday and have rode it a few times. Man is it fun!
I don't know how the dealership missed the fact that the fan never kicked on during their test ride. The thing is loud!
One other question about the fan tho. When the fan is running and I go to turn the bike off, it kills the fan too. My buddies R6 still runs the fan till the bike cools enough to shut off. Even after turning his bike off. Is this a KTM thing where everything turns off?
I don't know how the dealership missed the fact that the fan never kicked on during their test ride. The thing is loud!
One other question about the fan tho. When the fan is running and I go to turn the bike off, it kills the fan too. My buddies R6 still runs the fan till the bike cools enough to shut off. Even after turning his bike off. Is this a KTM thing where everything turns off?
ArkansasDave
New Member
It's a lot of bikes thing. I wouldn't worry about it too much. As soon as you start the bike again the fluid will flow and the fan will turn on.
Fasteddy
Member
Your buddies R6 has likely had the 'fan relay' mod done to it, last R6's I rode and my YZF600R all shut fan / everything off with ignition switch.
This seems like a brilliant thing to do to all bikes... lol
rick
New Member
At here in Cali, some bikes have a fan that runs after shutdown for emissions purposes.
reenmachine
Member
I don't see the point in it. There's no coolant flow, so you're only cooling the coolant that's in the radiator. As a bonus, you're draining your battery running a high-draw device while you're not generating power.
big_sur
New Member
qft..........
