| Author | Message | ||
     Freight_dog |
I had posted in the stator failure count thread (http://www.badweatherbikers.com/buell/messages/290 431/582483.html?1280009680)about my volts dropping to 12.5 to 13.1 volts while riding, and then dropping to 11.9 while idling. I discovered today what the cause of those readings were when my radiator fans quit working. Suddenly the volts were reading in the 13.7 to 14.2 range while my coolant temps, usually in the 180's, were approaching 220. When I stopped to shut her off and let it cool down, I noticed no cooling fans. When I check the error codes I got: P0693 and P0691 which are the LT and RT cooling fans. It also has P0506, not sure if thats related. It is de-noided with the harness upgrade and the resistor plug moved under the left radiator shroud. I will be calling Western Reserve in the morning, but I was hoping some of the notoriously helpful people here might have some ideas. | ||
| Tpoppa |
Fuse? | ||
| Freight_dog |
Well, yeah it's the fuse, but WHY? And why is there a 15 amp fuse in there when the book calls for a 10...which would obviously have blown a long time ago...and why can't the charging system handle the fans? WTF!?!? (Message edited by Freight_dog on July 26, 2010) | ||
| Tpoppa |
I've never ridden an 08...does the voltage on the 08s drop when the fans kick in? | ||
| Freight_dog |
Mine's an 09. To the best of my knowledge, it only started doing this recently. 3500 miles, the stator died at 800, that was when I had the harness upgrade done too. I haven't had any problems until now. Of course, that was back in March/April when the fans didn't need to run all the time and the bike didn't get uncomfortably hot during a ride. | ||
| Rasmonis |
I had the harness upgrade done and noticed that if I ride my bike before the fans kick on I get the sys volt error. If I ride after fans start, no error. '09 1125r no mods. Apr 09 build. I'm not sure if the harness upgrade did anything as the condition existed before the upgrade. I now make sure I keep the rpms above 5K whenever possible. For the riding I do lately I seldom get out of 2nd gear. | ||
| Mountainstorm |
That's a weird one for sure. Seems unlikely both fans would fail at the same time. Just guessing, but maybe one of the fans has a bad winding or some other short circuit and that's the fault. Since both fans kick on at the same time (after a certain point) maybe you could watch it closely during warm up (with a new fuse of course) and see if the volts drop when the first fan kicks in or when both kick in. Maybe you'll get lucky and it'll be as simple as replacing a bad fan. I'd be suspicious of that high amp fuse. Seems like someone previously had a problem and tried to fix it (but not really fix it). | ||
| Freight_dog |
That's what I was wondering about the fuse. It either came from the factory like that, or was part of the harness upgrade. I never noticed before how much the fans run on an 85 degree day. They are almost on constantly, with only brief off periods pretty much only during high speed cruise. | ||
| Thurstonbuell |
I accidentally left my cooling fans un-pluged after doing some work , this will also throw an error , so I'm guessing that it may also throw an error if they go bad....? Maybe just check the connections | ||
| Motorhead102482 |
Try disconnecting the fans from the harness with a 10 amp fuse. Then one at a time plug them back in. Obviously, this would have to be with the bike running and up to temp. If one of them blows the fuse, then unplug the one that didn't blow the fuse and try running a new fuse with just the one that caused it to blow. It could either be that the circuit can't handle the draw of both fans, or that one fan is shorting/binding. A fan that binds due to bad bearings can also cause a significant enough load to blow a fuse. The motor in the fan doesn't always have to be shorted. Also, if one is binding enough just to keep the current draw higher than the circuit allows with both fans on it could be blowing the fuse, either fan might not blow the fuse plugged in by itself. | ||
| Freight_dog |
Thanks for all the advice. I did put in a new fuse, and it blew almost immediately. Not being a fan of troubleshooting electrics and since it's still under warranty, I dropped it at the dealer this afternoon. Since I will be gone for work for a couple weeks, I won't miss the bike. Western Reserve scheduled it in for the 10th but said if they get a hole in the schedule they will look at it earlier. Just hoping I don't have to wait the rest of the summer for parts. | ||
| Tpoppa |
Western Reserve has always been one of the better Buell dealers. I have a few gripes about how HD has handled the electrical issues, but WRHD has held up their end  (Message edited by tpoppa on July 28, 2010) | ||
| Skntpig |
It is de-noided with the harness upgrade and the "resistor plug moved under the left radiator shroud." Can you please explain more about moving the resistor? | ||
| Freight_dog |
I purchased the resistor when I removed the 'noid. When the dealer (WRHD) did the harness upgrade, the harness plugs in where the resistor was. I found the resistor plugged into a terminal under the left pod. I am not sure what that terminal is for. | ||
| Eweaver |
I think the latest flash that came with the harness upgrade waits until 200 degrees to turn on the right side fan. The left fan will still turn on at 180 degrees. | ||
| Zac4mac |
Freight_dog - buy another resistor plug. The one you pulled is the terminator for the CAN bus and could screw up your IC/ECM/sensor communications. Or find the one you bought. | ||
| Freight_dog |
Zac, I never pulled the resistor. It is exactly where the dealer put it when they did the harness. | ||
| Zac4mac |
OK cool The resistor is the identical part, used as a terminator under the left pod and also for the 'noid removal. I just don't want someone to try and save 5 or 10 bucks by using a very important part in the wrong place...  Z |
