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Old 05-14-2013, 06:27 PM   #1
timbo45 OP
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overheating issues on my 09 990 adv

I have a KTM 990 adv and in hot weather mostly in traffic the gauge is maxed out and it starts flashing at me with fan on is this normal. Its got pipes and 13000 miles
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Old 05-15-2013, 03:59 AM   #2
alongat
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Have you owned this bike since new or at least for a few miles and is this the first time this has happene? If yes, what has been done to the bike in terms of service or changes? Did the coolant get changed and perhaps not "bled or burped" properly? Has the fan stopped operating? Is it truly running hot or is it a dash/sensor malfunction? Has the water pump failed and have you checked your coolant level in the reservoir (is it throwing coolant into the engine case as a result of a failed pump)? Lets try to rule out the easy stuff first...

Tell us more...
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Old 05-15-2013, 07:09 AM   #3
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All services have been done by the dealer . Im not sure if they changed the antifreeze but i will check . The owner of the dealer in sparks nevada said the 990 seems to run hotter. It also did this when it was new . I was thinking of installing the after market second fan kit and the lower temp fan switch . My friend was riding a new BMW 800 and his temp bars were in the middle when mine was flashing at me
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Old 05-15-2013, 07:21 AM   #4
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You may want to "burp" the system first by raising the front of the bike high and opening up the bleeder a few at the top left of the radiator. Bleed the air out of the system (lots of threads on details for this procedure if you search) otherwise things like engine ice instead of normal coolant, the lower temp fan switch and a secondary fan will do wonders.
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Old 05-15-2013, 07:32 AM   #5
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Quote:
Originally Posted by alongat View Post
the lower temp fan switch and a secondary fan will do wonders.
How long have you had these installed? What was the result? Is your operating temp consistently lower?

Thanks.
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Old 05-15-2013, 07:37 AM   #6
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How long have you had these installed? What was the result? Is your operating temp consistently lower?

Thanks.
I haven't done them to my 990r yet but I did the fan temp switch and engine ice on my previous 950adv and the difference was big, especially in tight low speed off road and stop and go traffic on road. Don't forget too that these engines are designed to run hot for the catylitic converters to be effective. If you are using an aftermarket exhaust, it's that much better. For me, running lower engine temps offers many advantages including extended engine life, etc. I will be replacing my fan switch to a lower temp unit and I will run engine ice - I'm not yet convinced that I will need the secondary fan.
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Old 05-15-2013, 07:39 AM   #7
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Quote:
Originally Posted by alongat View Post
I haven't done them to my 990r yet but I did the fan temp switch and engine ice on my previous 950adv and the difference was big, especially in tight low speed off road and stop and go traffic on road. Don't forget too that these engines are designed to run hot for the catylitic converters to be effective. If you are using an aftermarket exhaust, it's that much better. For me, running lower engine temps offers many advantages including extended engine life, etc. I will be replacing my fan switch to a lower temp unit and I will run engine ice - I'm not yet convinced that I will need the secondary fan.
Thank you.
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Old 05-15-2013, 08:03 AM   #8
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If the bike is stock it runs lean.
You have several things against you when slow going with the 990.

Cooling system is a little undersized, not really meant to work at keeping the bike cool while crawling along at slow speeds.

Running lean makes the bike run hot

Stock Cats = BIG HEAT no getting around that.

If you put on the second fan and lower temp switch that goes a long way in helping, if you remap to reduce the lean condition that goes a long way too since that is one of the major causes of the symptoms.

Also flush the system to eliminate the casting sand issue, burp it for air, and you can use one of the more efficient coolants as well all will contribute to reducing the issue.

Riding faster is really the best solution
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Old 05-15-2013, 09:36 AM   #9
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Adding Redline Water Wetter to your antifreeze can help to reduce the operating temperature by up to 20f http://www.redlineoil.com/product.aspx?pid=74&pcid=10
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Old 05-15-2013, 07:37 PM   #10
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Same same

I had the same issue on my 09 990. I flushed the coolant system with info on the HOW, removed the casting sand (there was a lot!), switched to engine ice, and burped it. I still had overheating problems after that. I then added a second fan, and that solved the problem. I have the lower temp switch ready to go if the problem resurfaces.

My advice: get the second fan.

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