Kawasaki Ninja Forum banner
1 - 20 of 27 Posts

·
Registered
Joined
·
18 Posts
Discussion Starter · #1 ·
I'm taking my bike to the dealer in a few days (under warranty) but figured I would see if anyone else has had this problem. I rode my bike during the summer and when I park and turn off the bike the cooling fan will run for a few moments then shut off. I was told this is normal but now it's around 36-51°F and the bike has been sitting for almost a week and I just happen to walk into the garage and heard the fan running. Upon further inspection I noticed about every 4.5 min the fan would come on, spin one full rotation then stop. I know the bike did it during the summer, I figured it was just keeping the engine cool in 90°F weather. But on a 35° night after sitting non touched for a week?? Dealer said he would have to pull the radiator and check the temp sensor?

12RKNinja
 

·
Premium Member
Joined
·
4,247 Posts
So the fan is running with the bike turned off?
That seems very weird!
Definately get it looked at!
 

·
Registered
Joined
·
18 Posts
Discussion Starter · #3 ·
I just dropped it off at the dealer there gonna keep it a week or so to monitor it. The crazy part is I started it ran it up into the trailer and shut it off. The time it took to tie it down it never made a sound even through it was before I started it to put it on the trailer. Dealer said it could be part of the ignition or a short near the temp sensor. also said in all the time they have owner/operated and been around bikes they have never seen or heard of this problem. Must be something about the 2012's

Time will tell. Ill keep updated that way we have a reference in case someone else gets this problem

12RKNinja
 

·
Registered
Joined
·
18 Posts
Discussion Starter · #4 ·
UPDATE: just got the bike back strange dealer meter was able to hear or see the fan run but it was under warranty so they put in a new temp. Sensor.
I rode it home (35 min drive) and hit has sat for a few days not a peep from it.

Problem solved. For now

12RKNinja
 

·
Registered
Joined
·
18 Posts
Discussion Starter · #5 ·
12RKNinja said:
UPDATE: just got the bike back strange dealer meter was able to hear or see the fan run but it was under warranty so they put in a new temp. Sensor.
I rode it home (35 min drive) and hit has sat for a few days not a peep from it.

Problem solved. For now

12RKNinja
Typo. Dealer never was able to hear or see the fan run.

12RKNinja
 

·
Registered
Joined
·
18 Posts
Discussion Starter · #6 ·
UPDATE: bike has been sitting in cold garage non started for about 2 months and I decided to move bike to make some room and heard the sound of the fan again, after that I let it sit for a few weeks never heard it again. Then decided to ride it to my dads garage (more room) and parked it for 3 weeks, he told me last night that while he was sanding down the project car he heard a whining sound, he stopped, investigated, and determined it came from my bike.

Could this be do to the coolant sloshing around while moving bike and/or the dust and heat from sanding, air compressor, and other shop equipment?

12RKNinja
 

·
Registered
Joined
·
9,088 Posts
Houston.....u have a problem.....:whistling::whistling:
Fan should not run till temp sensor tells it to....:nonono::nonono:
End of story.....:thumb::thumb:
Ignition off......
Self explanatory......

If my fan is running while i'm stopped at a light.......
If i shut the bike off....fan stops.....








 

·
Registered
Joined
·
674 Posts
Some cooling fans will continue to run for a small amount of time when the engine is hot and the ignition is off - that's not unusual.

It is unusual to have it run when the engine is cold and the ignition is off.

I would guess temp sensor also, but it could be an ECU-type problem as well because there should be a time limit after the ignition is off, and because that parameter isn't being followed it may suggest something beyond the temp sensor is involved.


Jay
 

·
Registered
Joined
·
9,088 Posts
Some cooling fans will continue to run for a small amount of time when the engine is hot and the ignition is off - that's not unusual.

It is unusual to have it run when the engine is cold and the ignition is off.

I would guess temp sensor also, but it could be an ECU-type problem as well because there should be a time limit after the ignition is off, and because that parameter isn't being followed it may suggest something beyond the temp sensor is involved.


Jay
NOOOOOOooooooo.....Not the ECU.........:eek::eek:








 

·
Registered
Joined
·
1,480 Posts
... he told me last night that while he was sanding down the project car he heard a whining sound, he stopped, investigated, and determined it came from my bike.

Could this be do to the coolant sloshing around while moving bike and/or the dust and heat from sanding, air compressor, and other shop equipment?
riiidde meeee! riiidde meeee!

It as a sign from your bike that it wants to be ridden and is tired of being neglected for weeks on end and then shuttled around from place to place like a red headed step child.

BAD OWNER!!
 

·
Registered
Joined
·
9,088 Posts
riiidde meeee! riiidde meeee!

It as a sign from your bike that it wants to be ridden and is tired of being neglected for weeks on end and then shuttled around from place to place like a red headed step child.

BAD OWNER!!
:thumb::thumb::thumb::thumb:

Sounds like my wife.....

riiidde meeee! riiidde meeee!

:whistling::whistling::whistling::whistling:








 

·
Registered
Joined
·
1,480 Posts
The radiator fan is connected directly to the battery. The radiator fan may start even if the ignition switch is off or as soon as the key is turned on, providing that the radiator fan switch is working properly and the Turn On temp is met (above 196 degrees faren).

Coolant does not slosh. If it does, it means your radiator is half empty and you wont hear it.

What your dad probably heard was the gas cap whine. It is a noise phenomenon among Kawasaki owners. It is normal and happens when the the gas vapors in the tank expand and escaped through the gas cap vent. happens in the heat or even cooler weather. If it becomes annoying, just open the gas cap. If it's hot out....well you decide.

Kawasaki 250r Tea Kettle - YouTube
 

·
Registered
Joined
·
18 Posts
Discussion Starter · #14 ·
Thanks all. Yeah I need to ride more but other then Saturday 55° its been cold windy 30's high 41, as for the tea kettle I watched many vids about that and no my whistle doesn't go on for that long nor is it that high of a pitch.

Temp sensor has been change and full service on bike. O well as long as it doesn't get to draining my battery screw it. I had just wondered if anyone had this prob before.

As for the coolant sorry no it doesn't "slosh" I was referring to when I was hand pushing the bike and the coolant/temp sensor radiator (miss use of wording sorry it was 2am). had experienced a temperature fluctuation, I'm guessing that would have to be a lot higher temps tho right.

12RKNinja
 

·
Registered
Joined
·
9,088 Posts
My 2012 Ninja 650 fan will not run with key in off position....:nonono::nonono:
I just started the bike n let it run for a while....:thumb:
Herd the fan startup, so i killed the key nnnnnn...fan died soon as i did.:thumb::thumb:
Turned key back on nnnnn fan started running again for a bit.....
while engine was not running.....:dance::dance:
So on my bike anyway the fan WILL NOT RUN WITHOUT KEY IN ON POSITION.....:whistling::whistling:
Other models i don't know about....:facepalm::facepalm:
Anyone else wanna give it a try n seeeeee..... ?????????








 

·
Registered
Joined
·
18 Posts
Discussion Starter · #16 ·
Yeah mine will turn off with the key also but come back about 6-10 hr later and sit and listen for a few min and you can hear it whine I little then stop won't do it all the time most time it's when I open garage door, open deep freezer door for a few min that's why I was thinking temp fluctuation. Most time it's really noticeable as the temperature drops at night. ?? Idk perhaps the paranormal things I think I see are actually there lol.
I'll try to get an audio of it and post YT and post URL here for you to listen.

12RKNinja
 

·
Registered
Joined
·
9,088 Posts
Yeah mine will turn off with the key also but come back about 6-10 hr later and sit and listen for a few min and you can hear it whine I little then stop won't do it all the time most time it's when I open garage door, open deep freezer door for a few min that's why I was thinking temp fluctuation. Most time it's really noticeable as the temperature drops at night. ?? Idk perhaps the paranormal things I think I see are actually there lol.
I'll try to get an audio of it and post YT and post URL here for you to listen.

12RKNinja
Maybe u need to put in a battery disconnect switch someplace easy to access.....








 

·
Registered
Joined
·
1,480 Posts
Yeah mine will turn off with the key also but come back about 6-10 hr later and sit and listen for a few min and you can hear it whine I little then stop won't do it all the time most time it's when I open garage door, open deep freezer door for a few min that's why I was thinking temp fluctuation. Most time it's really noticeable as the temperature drops at night. ?? Idk perhaps the paranormal things I think I see are actually there lol.
I'll try to get an audio of it and post YT and post URL here for you to listen.
If your fan is coming on when you open the freezer door. Your radiator fan switch is bad. The fan switch controls whether your fan comes on at the right temp when it gets hot. You need to find out what what the dealer replaced. If they replaced the temp sensor on the thermostat, then they replaced the wrong thing.

Radiator Fan Switch connections:
Rising Temperature From OFF to ON @95 ∼ 101°C (196 ∼ 203°F)

Falling Temperature From ON to OFF within 3 ∼ 8°C (37 ∼ 46°F) of “ON” temperature
_____________________________________________________

Water Temperature Switch Connections:
Rising Temperature From OFF to ON @112 ∼ 118°C (226∼ 232°F)

Falling Temperature From ON to OFF @108°C (226°F) ∼ temperature less than ON


To make sure it is the fan that you hear coming on, you can unplug the radiator fan switch and jump the terminal to get it to come on. I know people describe sounds differently, but the fan usually makes a whirring sound. You can hear it @ 6:25 on this video immediately followed by the tank whine.

Ninja 250 engine sounds - YouTube
 

·
Registered
Joined
·
9,088 Posts
Everytime I sit on my bike i have a gasacomingoutmybutthole......
I'm gunna have my dealer check my buttholeathingamabob thermostat.
I'm quite sure it must be getting bad by the smell i been getting....
:whistling::whistling::whistling:
Either that or my catalyst is plugged....:facepalm::facepalm:








 
1 - 20 of 27 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top