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MarkT Exhaust
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Author Topic: Interstate Fan Operation  (Read 691 times)
bikerboy1951
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Posts: 259

Grand Forks, ND


« on: May 01, 2013, 07:38:31 PM »



I have had a standard for 2 years and the fan seldom comes on except when idling for a long time or in slow traffic on a hot day.
I purchased an Interstate last fall.  I changed antifreeze this spring since I didn't know how old the stuff in the bike was.  I ran it and the radiator and overflow bottle are full.  I have only ridden it about 300 miles this spring because of the cold weather still hanging around.  A couple of time when parking to open the garage door, the fan has come on and the outside temp is 60* or less.  Is this normal operation for the Intertstate as opposed to the standard.  If there is something wrong, I want to get it fixed just in case it does finally warm up here.

Brads
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PhredValk
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Posts: 1531


Edmonton, Alberta, Canada


« Reply #1 on: May 01, 2013, 08:37:08 PM »

I've only had the fan cut it on my 99 IS when stuck in traffic at 80ยบ+. It might be normal, if I let her run in neutral for 7-8 minutes the fan will come on, but that's rare. Try opening the rad cap when cold and top it up (could be a vapor lock in the rad). You may need a new thermostat.
Fred.
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Growing old is mandatory, growing up is optional.
VRCCDS0237
Pete
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Posts: 2673


Frasier in Southeast Tennessee


« Reply #2 on: May 02, 2013, 05:40:29 AM »

I have both (Standard and IS) and yes the IS is more sensitive to slow traffic and multiple or long stops.

My observation tells me that the IS lowers do not evacuate hot air as well at a stop or slow speed as the Standard.
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Jess from VA
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Posts: 30524


No VA


« Reply #3 on: May 02, 2013, 08:32:34 AM »

About the only time I notice my fan come on on either of my ISs is when I get home from a ride and leave it running while I get off and open my big gate, and then the bike shed door in the back (takes a few minutes, but the bike is hot from the ride when I get home).  I try very hard to not get caught in big traffic (which is all over the place where I live).
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Ricky-D
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Posts: 5031


South Carolina midlands


« Reply #4 on: May 02, 2013, 09:05:46 AM »

My feeling is that there is no basic difference between the Interstate and the other models when considering the cooling system.

i mean the thermostat and capacities, operating parameters, and all the rest.

No discernible difference.

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2000_Valkyrie_Interstate
longrider
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Posts: 557


Vernon, B.C. Canada


« Reply #5 on: May 02, 2013, 11:59:38 AM »

A couple of things come mind here.  Most of you do not have temp gauge or oil pressure gauge and therefore cannot monitor them easily.  Start with a replacement t-stat if you haven't already.  Maybe a rad flush as well.   From personal experience with a standard I bought new in 2000 that seemed to run a bit warmer than I thought it should in warm weather at cruise,  (200-205 @95 f)  I replaced t-stat and flushed the system.  Still no go.  Then a few years later I had the rad open up like a river in the middle of a three week vacation.  Lucky for me I found a rad close by with less than 20k miles as Honda had them back ordered for at least six months at about $700.  Since then the heating issue has been gone.  The manufacturer of these rads may have had some issues with soldering some of the core over thus reducing the flow.
JMHO

Warren
« Last Edit: May 02, 2013, 12:07:04 PM by longrider » Logged
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