Wilsons Sandbox

First, with the ignition off try spinning the fan blades. See if they turn freely. Second, disconnect the wire leading to the temperature sensor at the bottom of the radiator (the blade connector that sticks out of the radiator on the bottom rear side), and ground that wire to a shiny spot on the cylinder. The fan should turn on immediately. If it does, then you either have a bad sensor or a very dirty connection. Try cleaning the connector and see what happens. Third, there is a fuse under the right side radiator shroud for the fan motor. Replace it and see if the fan works (grounding the wire). The fuse can look good but still be broken inside one of the end caps. Beyond that, there is a relay for the fan motor but I'm not sure where it is. You could check for that by jumpering around the relay (be prepared for sparks), but I don't know where the fan relay is. Devon A15 Ricardo Pontes wrote:

> > I think my radiator fan is not working! I have not heard it in quite a > while. Its plugged in. Anyone know how i can go about fixing it? Its been > like that for a while. I crashed a while back, and it was on the left side, > but it worked after the crash and i never thought about it before. I had > radiator crash bars that took most of the damage. > > Lemme know. I dont know much about technical stuff > > List sponsored by Dual Sport News at www.dualsportnews.com. List FAQ courtesy of Chris Krok at: www.bigcee.com/klr650faq.html > Unsubscribe by sending a blank message to: > DSN_klr650-unsubscribe@yahoogroups.com . > > > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/

> Beyond that, there is a relay for the fan motor but I'm not sure where > it is. You could check for that by jumpering around the relay (be > prepared for sparks), but I don't know where the fan relay is. > > Devon > A15 >

I seem to remember that the relay assembly is attached to the frame. You can follow the wire from the fuse; that will lead you to it. I'm not a real electrician but I'm not sure it would be a good idea to jump the relay. You can test the relay with a multimeter. The procedure is outlined in one of the manuals. The test is a bit complicated but if I can do it Ricardo or a friend conversant with electrics can too. Bogdan

--- In DSN_klr650@y..., Devon Jarvis wrote:

> First, with the ignition off try spinning the fan blades. See if

they

> turn freely. > > Second, disconnect the wire leading to the temperature sensor at the > bottom of the radiator (the blade connector that sticks out of the > radiator on the bottom rear side), and ground that wire to a shiny

spot

> on the cylinder. The fan should turn on immediately. If it does,

then

> you either have a bad sensor or a very dirty connection. Try

cleaning

> the connector and see what happens. > > Third, there is a fuse under the right side radiator shroud for the

fan

> motor. Replace it and see if the fan works (grounding the wire). The > fuse can look good but still be broken inside one of the end caps. > > Beyond that, there is a relay for the fan motor but I'm not sure

where

> it is. You could check for that by jumpering around the relay (be > prepared for sparks), but I don't know where the fan relay is. > > Devon > A15

Or, if it's cold where you live, the bike may not be getting warm enough to need the fan. I haven't heard mine in weeks. __Arden

Yes, Conall is right- the plastic KLR650 fan is unlikely to cause serious injury if you get your fingers in it, BUT turning off the ignition is not a guarantee that the fan will not run- even with the ignition off, if the motor is hot the fan will run. Devon Conall O'Brien wrote:

> > Good post on your part, but people may think that it's not possible for the > fan to turn on with the key off, when you and I know that a correctly > running fan will run after the key is switched off if the engine is hot. I > think you were trying to touch on the safety aspect of reaching in to touch > the fan,no? > > Cheers mate, > > Conall >

Also, the fan motor needs a ground. So check to see that there is a good ground between the fan and the frame. Your ohm meter should read close to zero between the metal fan body and the frame. Saw this one before. Mark. A11

--- In DSN_klr650@y..., Devon Jarvis wrote: > First, with the ignition off try spinning the fan blades. See if they > turn freely. > > Second, disconnect the wire leading to the temperature sensor at the > bottom of the radiator (the blade connector that sticks out of the > radiator on the bottom rear side), and ground that wire to a shiny spot > on the cylinder. The fan should turn on immediately. If it does, then > you either have a bad sensor or a very dirty connection. Try cleaning > the connector and see what happens. > > Third, there is a fuse under the right side radiator shroud for the fan > motor. Replace it and see if the fan works (grounding the wire). The > fuse can look good but still be broken inside one of the end caps. > > Beyond that, there is a relay for the fan motor but I'm not sure where > it is. You could check for that by jumpering around the relay (be > prepared for sparks), but I don't know where the fan relay is. > > Devon > A15 > > Ricardo Pontes wrote: > > > > I think my radiator fan is not working! I have not heard it in quite a > > while. Its plugged in. Anyone know how i can go about fixing it? Its been > > like that for a while. I crashed a while back, and it was on the left side, > > but it worked after the crash and i never thought about it before. I had > > radiator crash bars that took most of the damage. > > > > Lemme know. I dont know much about technical stuff > > > > List sponsored by Dual Sport News at www.dualsportnews.com. List FAQ courtesy of Chris Krok at: www.bigcee.com/klr650faq.html > > Unsubscribe by sending a blank message to: > > DSN_klr650-unsubscribe@y... . > > > > > > > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/

I did that, and apparently the fan works. I stuck the little switch ont he motor cylinder, and it spun immediatly. Its a relief, i wonder if im just paranoid. Is the fan soppose to work while im riding(and im not hearing it) or is it soppose to go on after i stop the bike? Damm, im glad we have this list. Cause i received tons of good information. Thanx guys. -----Original Message----- From: david gay [mailto:davidlg76@...] Sent: Thursday, November 07, 2002 6:01 PM To: Ricardo Pontes Subject: Re: [DSN_klr650] radiator fan? There's a wire on the bottom of the radiator that goes to the temp sw. Unplug that wire and put it to ground. It's has a spade terminal, and I just unplug it and put it against a fin on the motor. Even without the key on, the fan should run when you ground the wire. Its a quick check to see if the fan motor is still good. If it comes on, its probably the temp sw thats bad. But, check the fuse over on the other side of the bike. It's zip tied to the coolant bottle bracket. 10 amp glass fuse. Hope this helps dude. Dave A12 Ricardo Pontes wrote: I think my radiator fan is not working! I have not heard it in quite a while. Its plugged in. Anyone know how i can go about fixing it? Its been like that for a while. I crashed a while back, and it was on the left side, but it worked after the crash and i never thought about it before. I had radiator crash bars that took most of the damage. Lemme know. I dont know much about technical stuff List sponsored by Dual Sport News at www.dualsportnews.com. List FAQ courtesy of Chris Krok at: www.bigcee.com/klr650faq.html Unsubscribe by sending a blank message to: DSN_klr650-unsubscribe@yahoogroups.com . Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ ---------------------------------------------------------------------------- -- Do you Yahoo!? U2 on LAUNCH - Exclusive medley & videos from Greatest Hits CD [Non-text portions of this message have been removed]

Start the bike and let it idle for about 5 minutes or so, when it gets hot the fan should kick on. If the temp gauge really gets high and the fan did'nt come on, then trouble shoot it, could be anything from the temp sensor or loose wire. Rolling I never hear the fan, sometimes around town I can. Typically my fan will come on when I park the bike if I was riding slow speeds just prior to stopping. But only run for a few seconds. Dooden

--- In DSN_klr650@y..., "Ricardo Pontes" wrote: > I did that, and apparently the fan works. I stuck the little switch ont he > motor cylinder, and it spun immediatly. Its a relief, i wonder if im just > paranoid. Is the fan soppose to work while im riding(and im not hearing it) > or is it soppose to go on after i stop the bike? > > Damm, im glad we have this list. Cause i received tons of good information. > Thanx guys.

> I did that, and apparently the fan works. I stuck the little switch ont he > motor cylinder, and it spun immediatly. Its a relief, i wonder if im just > paranoid. Is the fan soppose to work while im riding(and im not hearing

it)

> or is it soppose to go on after i stop the bike?

It should come on whenever the system / coolant reaches the preset temp. If it's a concern, you could rewire, and add a toggle switch so that you can control when the fan is running, switching it on or off as you choose. That wouldn't work for me, because I'm half deaf and three quarters senile. I'd forget and leave the fan on, and never know it... (Grin) Mark Glitter is coined to meet the moment's rage; Genuine lives on from age to age. - Goethe's "Faust" KLR650 Motorcycle Pages: http://klr6500.tripod.com/ HomePage: http://home.adelphia.net/~msaint/index.html My Adelphia Email can be "iffy." If you don't get a response, please try: KLR6500@...

Could wire it into the switch circuit and mount a red indicator light I suspose with a pulsing piezo beeper so you look like a matchbox firetruck coming down the road. Dooden

--- In DSN_klr650@y..., "Mark St.Hilaire, Sr" wrote: > > I did that, and apparently the fan works. I stuck the little switch ont he > > motor cylinder, and it spun immediatly. Its a relief, i wonder if im just > > paranoid. Is the fan soppose to work while im riding(and im not hearing > it) > > or is it soppose to go on after i stop the bike? > > It should come on whenever the system / coolant reaches the preset temp. If > it's a concern, you could rewire, and add a toggle switch so that you can > control when the fan is running, switching it on or off as you choose. > > That wouldn't work for me, because I'm half deaf and three quarters senile. > I'd forget and leave the fan on, and never know it... (Grin) > > Mark > > > Glitter is coined to meet the moment's rage; > Genuine lives on from age to age. > - Goethe's "Faust" > > > KLR650 Motorcycle Pages: > http://klr6500.tripod.com/ > > HomePage: > http://home.adelphia.net/~msaint/index.html > > My Adelphia Email can be "iffy." If > you don't get a response, please try: > KLR6500@h...