Heating up - Yamaha FZ6R Forums - International FZ6R / XJ6 Motorcycle Community Forum

friendlyfriend · 03-15-2010, 01:49 PM

Whenever I turn off my bike, the temperature goes up and triggers the cooling fan at around 208. I live in San Francisco where it is usually relatively cold, say, in the 50s. I just wanted to know if this is normal. I'm not about to stand next to my bike every time I turn it off and wait for the fan to stop before taking the key out. I'm worried about what happens when outside temps go into the 80s and 90s.

MikeN02 · 03-15-2010, 01:53 PM

I think it's pretty normal. My bike is still new, only about 1400 miles on it and it does it from time to time. Fan would go on when I turn off the bike but when I remove the key it turns off.

dannymac702 · 03-15-2010, 02:35 PM

I have been stuck in rush hour traffic (1st. and 2nd. gears only) for several miles with temps over 110. Temp gague never got past 230. I always take the key out as soon as I shut the bike down so I didn't know the fan would run with engine off. PS- it is illegal to split lanes here.

MikeN02 · 03-15-2010, 02:49 PM

Quote:

Originally Posted by dannymac702

I have been stuck in rush hour traffic (1st. and 2nd. gears only) for several miles with temps over 110. Temp gague never got past 230. I always take the key out as soon as I shut the bike down so I didn't know the fan would run with engine off. PS- it is illegal to split lanes here.

I do it too but sometimes I turn the engine off and leave the key in and I hear the fan.

Illegal here in FL too, I think the only place legal is california because they're traffic is horrible, same with the Ozone. Only do it in emergencies.

**99vengeur** · 03-15-2010, 03:47 PM

Yeah, it's normal. The fan kicks on to keep the engine cool when you are not moving fast enough for the airflow to keep things below temperature. But once you shut it down, the engine is no longer running and will cool down on its own (granted a little slower than when assisted with the fan). So there is no need to let the fan run once you shut the engine down, unless you like recharging or replacing batteries frequently.

**JonKerr** · 03-15-2010, 04:59 PM

The temp will go up naturally when you shut down because you no longer have air flowing through the radiator. The fan kicks on while you're riding if your temp hits around 200 (very regularly) but you don't really notice it. But once the bike has been sitting for a while, it'll start to cool on it's own.

vitrox · 03-15-2010, 09:20 PM

realistically, the bike won't truly overheat until well into the high 200s/300s. I wouldn't worry about turning the key off, the bike keeps its temps below 240 on its own. turning it off it will heat soak, but still not go higher than 300. don't sweat it.

**dart1963** · 03-16-2010, 01:09 PM

Quote:

Originally Posted by JonKerr

The temp will go up naturally when you shut down because you no longer have air flowing through the radiator. The fan kicks on while you're riding if your temp hits around 200 (very regularly) but you don't really notice it. But once the bike has been sitting for a while, it'll start to cool on it's own.

Yeah, air flow and, more importantly, no coolant flowing... Not sure where our temp sensor sits, but once you turn off the engine, the coolant is no longer flowing through the block and radiator, so whatever metal is near the temp sensor starts heating that area of the coolant.... at that point it's no longer an indicator of "engine temp" (an average), but more of a "local temp sensor" (the area right at the temp sensor).

Also, at that point it is useless to have the fan running without the engine running, because you are only cooling the fluid in the radiator.

Roaddawg · 03-16-2010, 05:05 PM

Quote:

Originally Posted by friendlyfriend

Whenever I turn off my bike, the temperature goes up and triggers the cooling fan at around 208. I live in San Francisco where it is usually relatively cold, say, in the 50s. I just wanted to know if this is normal. I'm not about to stand next to my bike every time I turn it off and wait for the fan to stop before taking the key out. I'm worried about what happens when outside temps go into the 80s and 90s.

Like everyone else said, its normal. If your just cruising around the city right before you shut down, your temps going to be up a little. I've been commuting into the City since last July and haven't had any issues....don't worry about it, its normal.

friendlyfriend · 03-17-2010, 12:42 AM

So I guess I won't worry about it, but if there's no danger at 208 degrees, then I wonder why they have the fan come on at that point.

03-15-2010, 01:49 PM	#1 (permalink)
friendlyfriend Junior Member Bike: 2009 FZ6R Join Date: Mar 2010 Location: San Francisco Posts: 6 Thanks: 3 Thanked 0 Times in 0 Posts	Heating up Whenever I turn off my bike, the temperature goes up and triggers the cooling fan at around 208. I live in San Francisco where it is usually relatively cold, say, in the 50s. I just wanted to know if this is normal. I'm not about to stand next to my bike every time I turn it off and wait for the fan to stop before taking the key out. I'm worried about what happens when outside temps go into the 80s and 90s.

03-15-2010, 01:53 PM	#2 (permalink)
MikeN02 Senior Member Bike: 07 YZF R6 Join Date: Jan 2010 Location: Orlando, FL Posts: 1,964 Thanks: 276 Thanked 326 Times in 212 Posts	I think it's pretty normal. My bike is still new, only about 1400 miles on it and it does it from time to time. Fan would go on when I turn off the bike but when I remove the key it turns off. __________________ RIP 07/31/10

03-15-2010, 02:35 PM	#3 (permalink)
dannymac702 Member Bike: 2009 Yamaha FZ6R Join Date: Dec 2009 Location: Las Vegas, Nevada Posts: 52 Thanks: 13 Thanked 6 Times in 6 Posts	I have been stuck in rush hour traffic (1st. and 2nd. gears only) for several miles with temps over 110. Temp gague never got past 230. I always take the key out as soon as I shut the bike down so I didn't know the fan would run with engine off. PS- it is illegal to split lanes here. Last edited by dannymac702; 03-15-2010 at 02:42 PM.

03-15-2010, 03:47 PM	#5 (permalink)
99vengeur Administrator Bike: 2009 Yamaha FZ6R Join Date: Apr 2009 Location: Shreveport, LA Posts: 2,655 Thanks: 715 Thanked 752 Times in 476 Posts	Yeah, it's normal. The fan kicks on to keep the engine cool when you are not moving fast enough for the airflow to keep things below temperature. But once you shut it down, the engine is no longer running and will cool down on its own (granted a little slower than when assisted with the fan). So there is no need to let the fan run once you shut the engine down, unless you like recharging or replacing batteries frequently. __________________ Robert 2009 Cadmium Yellow FZ6R//Intuitive Racing No-Cut Frame Sliders//Evotech Swingarm Spools//Two Brothers Racing V.A.L.E. Complete Carbon Fiber Exhaust//Two Brothers Racing JuiceBox//Driven AIS Blockoff Plates//Uscgduncan Fender Eliminator//Custom Garage Door Opener//Custom Painted Windscreen//Bi-xenon Projector Retrofit with Blue Angel Eye//More in the making...

03-15-2010, 04:59 PM	#6 (permalink)
JonKerr Senior Member Bike: 2009 Raven FZ6R a.k.a. "Gretchen" Join Date: Jul 2009 Location: San Diego (Lakeside) Posts: 2,413 Thanks: 56 Thanked 868 Times in 487 Posts	The temp will go up naturally when you shut down because you no longer have air flowing through the radiator. The fan kicks on while you're riding if your temp hits around 200 (very regularly) but you don't really notice it. But once the bike has been sitting for a while, it'll start to cool on it's own. __________________ 2009 Raven FZ6R / BT-003 Tires / T-Rex Frame Sliders / T-Rex Swingarm Spools / Custombikeparts.com FE / R6S Mirrors / LP Flushmounts / DDM HID Kit / Pro Grip Grips / Pro Grip CF Tank Pad / StompGrip Race Ovals / Pazzo Shorty Levers / GYTR Tinted DB Windscreen / R6 Header & GYTR CF Exhaust / DynoJet PCV / Marthy Maps / K&N Intake / Driven Lightened Sprocktes / EK Chain / RaceTech Suspension / MFW Vario Offset Pegs / EBC HH Brake Pads / Goodridge SS Brake Lines My Vimeo Page

03-15-2010, 09:20 PM	#7 (permalink)
vitrox Senior Member Bike: 2008 R1, 2009 FZ6R, 2010 BMW S1000RR Join Date: Nov 2009 Location: fairbanks, ak Posts: 217 Thanks: 3 Thanked 63 Times in 37 Posts	realistically, the bike won't truly overheat until well into the high 200s/300s. I wouldn't worry about turning the key off, the bike keeps its temps below 240 on its own. turning it off it will heat soak, but still not go higher than 300. don't sweat it.

03-17-2010, 12:42 AM	#10 (permalink)
friendlyfriend Junior Member Bike: 2009 FZ6R Join Date: Mar 2010 Location: San Francisco Posts: 6 Thanks: 3 Thanked 0 Times in 0 Posts	So I guess I won't worry about it, but if there's no danger at 208 degrees, then I wonder why they have the fan come on at that point.

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