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DaBlue1 · February 20th, 2013, 02:23 PM

If your fan is coming on while idling in traffic. It may be normal. When the coolant temperature goes up beyond 96 ∼ 100°C (205 ∼ 212°F), the radiator fan switch turns on the radiator fan. The radiator fan draws air through the radiator core when there is not sufficient air flow such as at low speeds. This increases up the cooling action of the radiator. When the temperature is below 91°C (196°F), the fan turns off.

Feeling heat radiating off the engine is not a call to panic. Bigger bikes do this all the time and worse. as long as your fan is turning on your systems is working the way it should.

The Water Temperature Warning Indicator Light may come on temporarily if the engine is really hot or the oil/pressure is too low. It may do it just before the fan turns on or air flow is improved. It is normal for the bikes to get this hot.

When the bike is actually overheating, you will hear and see coolant coming from the bottom of the bike. It may sound like a whooshing or boiling sound. That is hot coolant being force into the reservoir. If this happens after 10 minutes or so of riding, you probably have a bad radiator cap the is longer holding the recommended pressure.

Severe cases of overheating can result in the engine making a nasty knocking noise, run poorly and eventually seize. This is the time to panic.

February 20th, 2013, 02:23 PM	#16
DaBlue1 Long Time Rider Name: Blue Location: Charlotte, NC Join Date: Sep 2010 Motorcycle(s): 2009 Kawasaki Ninja 250R Posts: A lot.	If your fan is coming on while idling in traffic. It may be normal. When the coolant temperature goes up beyond 96 ∼ 100°C (205 ∼ 212°F), the radiator fan switch turns on the radiator fan. The radiator fan draws air through the radiator core when there is not sufficient air flow such as at low speeds. This increases up the cooling action of the radiator. When the temperature is below 91°C (196°F), the fan turns off. Feeling heat radiating off the engine is not a call to panic. Bigger bikes do this all the time and worse. as long as your fan is turning on your systems is working the way it should. The Water Temperature Warning Indicator Light may come on temporarily if the engine is really hot or the oil/pressure is too low. It may do it just before the fan turns on or air flow is improved. It is normal for the bikes to get this hot. When the bike is actually overheating, you will hear and see coolant coming from the bottom of the bike. It may sound like a whooshing or boiling sound. That is hot coolant being force into the reservoir. If this happens after 10 minutes or so of riding, you probably have a bad radiator cap the is longer holding the recommended pressure. Severe cases of overheating can result in the engine making a nasty knocking noise, run poorly and eventually seize. This is the time to panic.