Superdan
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samba
I think the fan only comes on 4 bars? can someone correct me or confirm?
Razy
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ktmguy
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ktmguy
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jimmay
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990 WFO
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jimmay
Just hold the connectors together or use a paperclip...bit of wire...
990 WFO
Well, looks like its not the switch on the radiator, I pulled the connector and looped a paperclip from one prong receiver to the other, flipped the ignition and nothing. Time to hunt for a prob further up the system....guess I better go buy a volt meter.
jimmay
did you ever figure out what the cause for for the fan not turning on. My SDR is doing the same thing just happened all of the sudden ive checked everything i could thing of and still nothing. this bike is driving me nuts. Any help would be awesome.
990 WFO
Are there schematics for the electrical fan? If you had those and a multi-meter I could walk you through on how to check continuity.
jimmay
i dont have the schematics for the fan. i did check the power to thermo switch and power to the fan connector then right into fan body with a test light all have juice. it seems that there is not enough juice to power the fan but im not sure. i hooked the fan to 12 volt batt and it turns on but for some reason the power from the thermo switch will not activate when its hot. i have access to a multi-meter tool. now what? thanks for helping/checking this thread im out of ideas on this one.
jimmay
If your fan is hooked up to a power supply and the fan starts, then your problem is before the actual fan.
What test light did you use? Keep in mind that depending on how you tested it, you may not have proven anything. Example: if you check voltage across on open wire, a multi-meter (or your test light possibly) will read source voltage and many misinterpret this as a "good" reading. This is because your meter is actually completing the open circuit and source voltage is choosing the path of least resistance by traveling through your meter (or light).
If you have the patience I would take the mutli-meter and measure resistance between the wires starting from the fan input. A straight wire should measure less than one ohm. Your results may vary slightly but you'll know when you have an open (the meter will read O.L. or several thousand ohms). I'm not familiar with the design of the electrical system but if you measure across electronics such as a rectifier you'll probably read a couple hundred ohms. Your ignition should be turned OFF!!! and I would pull the main fuse of the bike as well with fuse pullers just to be on the safe side.
Before you attempt any of this though I would put your thermostat in boiling water to make sure it's not your problem
What test light did you use? Keep in mind that depending on how you tested it, you may not have proven anything. Example: if you check voltage across on open wire, a multi-meter (or your test light possibly) will read source voltage and many misinterpret this as a "good" reading. This is because your meter is actually completing the open circuit and source voltage is choosing the path of least resistance by traveling through your meter (or light).
If you have the patience I would take the mutli-meter and measure resistance between the wires starting from the fan input. A straight wire should measure less than one ohm. Your results may vary slightly but you'll know when you have an open (the meter will read O.L. or several thousand ohms). I'm not familiar with the design of the electrical system but if you measure across electronics such as a rectifier you'll probably read a couple hundred ohms. Your ignition should be turned OFF!!! and I would pull the main fuse of the bike as well with fuse pullers just to be on the safe side.
Before you attempt any of this though I would put your thermostat in boiling water to make sure it's not your problem