radiator fan?

[mikehailwood63119]

This past summer I rode my KLR from St.Louis, Mo. to Alaska and back. If you are contemplating this trip and you have any questions regarding my experience, equipment or bike set-up, ask away. I will be happy to share any info you might find helpful. Regards, MikeHailwood63119

[klxrider@webtv.net]

Wow, what a great way to spend time away from home. Sounds like a wonderful trip. Hope to do this one day. Did you haul camping gear along with your personal items or would that be too big a load for the KLR? Just curious, Marshall in Shreveport, La '95 KLXC3 "Blackhorse" (to honor those who served)

[Allan Patton]

> If you are contemplating this trip and you have any questions > regarding my experience, equipment or bike set-up, ask away. I will > be happy to share any info you might find helpful. > > Regards, > MikeHailwood63119

Hey Mike, I have just one question. Did you ride up alone, or with someone else? When did you go? I'm wondering if July or August is better than June. What was the weather like? How long were you in Alaska? Where did you go in Alaska? Did you have any tire or chain problems? Did you stay in motels or camp? Where did you see the most wildlife? Wildlife meaning animals. I'll bet you have a mosquito story to tell. Don't have to ask that one. (-: Allan A14

[Mark]

Ricardo, The temp sensor is referred to in the manual as the fan switch. It's listed as PN 27010-1167, and not cheap, $48 at RonAyer.com. Physically located on left side, back of the radiator; a small brass tube with wire connected to it. The chain of events is 1. electricity from battery (pos terminal) 2. flows through the wiring harness 3. through the fuse 4. to provide energy to the relay and then to 5. to the fan switch, which closes -providing ground to energize the relay (fan switch = temp sensor) 6. relay contacts close -providing +12v to fan 7. fan turns on, drawing air through radiator. The fan switch closes only at/above the proper temperature. When the fan switch closes, it provides a ground to complete the coil side of the fan relay, turning the relay on (closing the contacts). Power flows through the contacts to energize the fan, through the fan motor and back through ground (chassis) to the neg terminal on the battery. My brother's A1 had a bad ground on the radiator. This prevented the fan from running. We fixed it by cleaning the crud off and corrosion of the radiator and fan mounts and also cleaning the wire mounts for the fan and relay. The short test to check the fan and fuse is to gently pull the wire of the end of the sensor, and touch the metal connector in this wire onto a bare spot on the engine. If the fan motor runs, then you can infer several things: Batt has charge fuse is good fan motor is okay relay is okay You then most likey have one of two problems 1. Bad fan switch (temp sensor) (this is possible but seems unlikey) or 2. Bad ground on radiator. Let us know how the trouble shooting goes. Mark. A11

--- In DSN_klr650@y..., "Ricardo Pontes" wrote: > > How do i make a toggle switch for the fan to come on? I checked the fuse, > and its fine. Replaced it with another and the fan still will not work. but > it works fine when i hook up the wire to the engine. > > How much is the sensor? Where is it located on the bike?