Question for 919 - Wrist Twisters
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post #1 of 3 Old 08-17-2007, 07:14 AM Thread Starter
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Question for 919

Question for 9er's , my radiator fan does not come on anymore I checked all the fuses and none are blown plus I followed the power line from the fan to the connector under the tank and that is ok. I took the fan and motor off connected to a power source and it worked so I know the fan motor is ok, so the question is where is the heat sensor switch that tell the fan to turn on ? I'm guessing that maybe unplugged or loose, this problem started after riding in a heavy rain .

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post #2 of 3 Old 08-17-2007, 07:51 AM
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The Engine Coolant Temperature (ECT) sensor is located right side, rear portion of the cylinder head where the coolant hose goes into the head. I would first check the connections on the fan motor relay located under the seat. It is the first one forward of the Turn signal relay.

There are electrical tests that can be performed to determine your problem. Some are involved, a service manual is most helpful.

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post #3 of 3 Old 08-17-2007, 12:54 PM
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Even with 2 weeks of over 104*, mine has only come on once in traffic. It appears to be a right on cooling system. Half way of gauge is the hottest I've ever seen. My ZRX was always coming on in traffic even in 80* weather.
But, man I miss Honda's hi gear light on the dash. I love the bike.

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