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Since you say it's been well maintained, I guess I can assume that your coolant level is fine. According to my maintence shedule, the coolant should be flushed out, and replaced every two years. But the big question? Did your fan turn on when things were getting hot?

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I had posted about my bike running hot and how I was worried about it overheating in traffic. Some other people said they were worried about their bikes overheating too. Everyone said not to worry about it because the bike would cool itself back down. Well it doesn't!!! The weather was a little over 90 and I was stuck in some stop and go after a little while the temp gauge kept climbing up till it hit the red and started flashing!!! I had to keep turning my bike off and on when it was time to move. What can I do to fix this prob? The bike is a 99 with 4700 miles on it and has been well maintained for the last 2500 miles that I've had it.
 

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the only waty it will cool itself back down is if you turn it off for a while or keep the bike moving. then fan just helps, but you shouldnt be dependent on it.

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"I love ninjas with every part of my body, including my pee pee."
 

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That's not what everyone else said now is it Shane? My 02 does the same. Tried alot of things but nothing fixed it. Everyone on this board is right no matter if they say something is wrong or if they say nothings wrong. True, it does heat up to outrageous temps. and that is wrong but they did not design the bike to stay cool even with the fan which is wrong. But, that's the way they designed it, so it is right. Confusing enough? So, in other words, there is something wrong with it and there is nothing wrong with it. Understand? Now, is that the runaround you have been getting?
 

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Or, it might not be right, but it's the way it was designed.

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-gary
 

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The fan should cut in at 5 bars, if not test the thermocouple switch in the rad for function, test the terminals across the fan motor (with wires off) for continuity, If you get total resistance (IE you cant make a circuit),then the motors shot. If the switch doesnt work (test in a jug of boiling water carefully)change it
On a 3-4 year old bike the coolant should have been changed by now, the rad has very small cores which block easily, take it off and run a hose through it backwards to flush any blockages. Make sure you put the correct quantity of coolant back in and use distilled water not from the tap.

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Ash


www.mcnninjas.co.uk The Best Ninja Owners Forum un the UK
 

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Have u tryed using a different brand of coolant i know there are some coolants that have a higher temp rating not sure ifnit will work but worth a try??
 

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you can get better aftermarket fans for the bike, also try different oil and coolants. I noticed certain oil brands make my bike run cooler.

I also think there stuff called "water wtter" that is suppose to help your engine run cooler...


also did you make sure your fan is turning on when it's suppose to?

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My Drinking Team Has a Racing Problem!
 

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You might want to verify that your coolant pump is actually working. I ran my 02 for several hours in 90 degree heat and it stayed right around 170 while moving. At 200 the fan kicks on and it doesn't get any hotter, even if I'm just idling at a stop.

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Jegs.com has the water wetter you spoke of. P/N 831-01600. $9.99 and it reduces temperatures by up to 30 degrees. Works better if you do not use anti-freeze but you should run at least 15% anti-freeze. It not only cools but minimizes deposits, corrosion, erosion, lubricates water pump seals, and won't gel up if it somehow gets into your oil. 1 ounce per 3 gallons:)
 

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Originally posted by cracked lid

I ran my 02 for several hours in 90 degree heat and it stayed right around 170 while moving. At 200 the fan kicks on and it doesn't get any hotter, even if I'm just idling at a stop.
I want your bike. Mine hits 220 getting on it in 60 degree temps.

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-gary
 

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First I was being sarcastic most got that. I had listened to a bunch of people say "don't worry about it the fan will come on and cool down the bike." I was just disappointed it didn't cool it back down. I saw the tv show on the making of the vrod and they were riding the bikes around in the desert then had them sit in a box and idle for an hour then they repeast the process a few times. I was just kinda mad that my "superior" high performance cutting edge technology bike couldn't pass the same test. I'm going to try the water wetter and see if that helps because it seems like the most simple solution to me. If it still doesn't work then I'll try adding 2 extra fans on a switch. I'm actually kinda thinking about putting header wrap on the header to see if that helps. I know it breaks down the headers and makes them rust easy but I figure if I only had it on during the summer it wouldn't be a big deal

answers to the questions


1-bike had all fluids changed at the dealer I bought it from

2-fan always comes on in the 5th bar on the temp gauge

3-all fluids are at the proper level but when I replace the coolant with water wetter I will flush the system

4-don't know of a way to check if the pump is working. My experience with water pumps in cars is that if its not working then the car will overheat even if you're moving
 
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