| Author | Message | ||
     Mpolans |
I've got a weird problem. My 07 XBScg has 7,600miles and a RSS, but is otherwise stock. I went for a ride for the first time in a while and my fan never came on. Normally, it's on almost all the time, especially after a mix of riding that included a lot of stop and go traffic in 75 degree weather. The bike felt hotter than normal on my legs too. However, I didn't get a CEL and the fan came on after I turned the ignition switch off. With the ignition switch off, it came on a high speed for a bit, then went to low speed for a while, then shut off. If at any point I flip the ignition switch back on, the fan instantly stops. Can anyone tell me what's going on? | ||
| Fast1075 |
Turning the key on and off will "reset" the control. I have heard rumor and hear-say that it is "bad" for the ECM. In any case, the fan needs to be allowed to turn off all by itself. When I changed from Mobil 1 V-twin oil to Amsoil, I found that my bike does not turn the fan on much at all while riding. | ||
| Djohnk |
My 2007 Uly does the same when the bike gets hot, but not hot enough for the fan to come on when I am riding. It's normal. But my fan always come on at shut down if it came on for awhile during a ride. That is an old fan cycle is supposed to help reduce heat stress problems (heat soak) due to the sudden stopping of air and oil circulation because you stopped and shut off the bike. There is a different fan cycle for the newer bikes. | ||
| Froggy |
There are several parameters that control the fan operation, including what temperature the fan turns on at if the key is on, and what temperature the fan tuns on if the key is off. The key off thresholds are lower, so it is possible to have your bike be only warm enough to have the fan operate while the key is off but not while the bike is running. Also, when you turn the key back on, it will stop the fan that way it isn't draining the battery while you crank. You shouldn't use that trick to shut the fan off, as the fan is running to keep the rear cylinder and the oil in it cool. | ||
| Skully |
+1 Froggy. | ||
| Natexlh1000 |
My 2008's fan came on more often when it had fewer miles on it. I guess it was running hotter due to the tightness or something. Perhaps yours is finally breaking in? | ||
| Mpolans |
I might have given the wrong impression. I wasn't turning the key off, I was hitting the kill switch. With the key on and the kill (run/stop) switch set to off, the fan would turn high speed for about 30 seconds, then low speed for long enough to cool off by itself. I did have an oil change done a while back (only ridden once since) and I believe the mechanic did use synthetic so maybe that's it. If the bike had a bad temp sensor, would the fan even come on at all? Also, if this is due to the oil change, in theory reducing heat caused by friction allowing the bike to run cooler, why would my legs feel noticeably hotter? Anyone else who changed oil notice heat *increasing*? | ||
| Djohnk |
"the fan would turn high speed for about 30 seconds, then low speed for long enough to cool off by itself" That's normal ... like Froggy said, a good thing. If your really interested in your bikes operating temperatures you could get one of these: http://www.americansportbike.com/shoponline/ccp0-p rodshow/A9256.html I have one on my wish list. |
