'00 929RR - overheating and not charging - Honda Motorcycles - FireBlades.org
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post #1 of 3 Old 06-17-2016, 12:27 AM Thread Starter
 
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'00 929RR - overheating and not charging

My bike's been great since my last posts. Most recently the temperature sensor that screws into the radiator went, and the fan wasn't coming on so it was overheating. I temporarily wired up the fan up to the clip-ons and I can manually twist the wires together to get the fan to come on, and I do so around 100˚C.
However, I found that the bike would continue to get hotter - up to 110˚C or more. And on my last ride, the power started to cut out - I quickly disconnected the fan in order to keep going, however I noticed that it was now really down on power, with flat spots and a funny sound -- feels like it's running on only 3 cylinders (again). So there's a series of events that happen that I think are related somehow but I haven't pieced together how.

1. Bike overheats
2. Charging system fails
3. One cylinder shuts down

I don't know what order these things happen in.
I replaced the stator and battery last year, but I don't think I replaced the regulator/rectifier or the stator cover.

Any thoughts?
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post #2 of 3 Old 06-17-2016, 5:31 AM
 
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Re: '00 929RR - overheating and not charging

OK look I had the same issue with the bike overheating so I also ran a switch to manually turn on the fan the thing is that I constantly had to put coolant into the radiator cuz it would just get empty but yet the resovoir would stay full well I can only think of one thing that can cause this and that is the radiator fan switch replace that does tend to go bad but before you go and get your self a new switch test the voltage on your fan and test the switch as well it's on the manual
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post #3 of 3 Old 06-17-2016, 10:10 AM Thread Starter
 
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Re: '00 929RR - overheating and not charging

Don't know why I never did this before, but I hooked up a multimeter in series with the battery to check the load with the bike off. 2.54A (!). Went down to 1.4 once I disconnected the "clock" fuse, which I suspect is the ECU. Something's not right there since that accounts for 1.14A alone. But I kept going and disconnecting other things - the rest of the fuses, relays under the tank, the stator (whose plug I found was melted), reg/rect, safety switches (kickstand/killswitch/clutch), headlights, horn, etc. I don't think there's many electronics left to disconnect, but I had to stop for now. The only other one that made any difference was the ignition switch, but I think that makes sense since the ignition switch bridges the battery to everything else, doesn't it? Once I pulled that it went down to 0. This is an aftermarket switch and I had to wire in the diode to bring pink down to 9.xV, so maybe that has something to do with it.
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