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Old 06-28-2011, 12:02 AM   #1
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Question 2002 Kawasaki Prairie 650 Overheating/Fan Issues

I have a 2002 Kawasaki Prairie 650; I have been having trouble with my cooling system. When just normal riding you can feel the heat building in the engine and anywhere from 5-10 mins after riding the cooling fan turns on. The fan use to be mostly quiet but now has a growl or louder hum then before. Anywhere from 5-10 mins AFTER the fan kicks on the heat is still building and soon the overheating light comes on the display. I haven’t noticed any overflow issues and the coolant reservoir appears to be full. The last time I rode, I could tell it got very hot and seems like the fan would run long after the engine was shut off (up to 20 mins). I haven’t really ridden too much after this has happened because of fear of damaging the engine. The radiator appears to be clean. I have always thought it was an issue with the fan because of the increase in noise. Could there be something more than an issue with the fan? I have taken the fan out and is there any way to test the fan assembly? As of right now, I am thinking about just replacing the fan assembly. Any suggestions or insight would be greatly appreciated!

Matt

Last edited by stubmat; 06-28-2011 at 12:04 AM.
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Old 06-28-2011, 09:29 AM   #2
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You can jumper the 2 wires from the sensor to test the fan. (Ones that plug into the rad) Put your hand infront of and behind the radiator and see if you can feel it pulling air and then go from there if you think its the fan.

As far as replacing it goes I went with a 10" hayden fan for $50. A new kawi fan was too expensive and a used one would.lend the same problem sooner or later.

But if the one you've got is moving air through the rad despite the noise you've got a problem elsewhere. Ie pump t stat airlock etc.

Last edited by coach robinson; 06-28-2011 at 09:37 AM.
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Old 06-28-2011, 10:30 AM   #3
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Are you sure your rad is clean? Shine a trouble light from the inside and take a look from the front. Otherwise, maybe you need a new water pump. Fire it up cold with the rad cap orr and watch for circulation.
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Old 06-28-2011, 10:31 AM   #4
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OFF not orr, dumb fingers!
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