| Author | Message | ||
     Dmurphy |
I posted this on the knowledge board but no one responded so here goes: I was riding the other day in stop/go traffic when I realized my fan was not running (it typically would as it was 100+ and I had been riding for a while). I stopped for about 20 minutes to do some shopping, started up the bike and rode it two blocks to the nearest stop light where it stalled out on me and wouldn't start again. I assummed it was overheating so I parked it for about 1 hour while I waited for a buddy to pick me up. It started up fine after that but I decided not to chance it and justed towed it home. I checked the resistance on the engine temperature sensor (ETS) and it looks good at room temperature (43000 ohms) and then put a hair dryer to it to simulate running conditions and it acted like it should per the manual (higher temperature measured lower resistance). I pulled the fan out and put 12 volts to it and it ran. I checked the fuse for the fan and it seemed fine. I pulled out the ECU and checked the resistance for the ETS again through the wiring from the ECU and it checked out. The wiring that I looked at seemed to be in good condition. The only other options by the service manual is to attach a "break out box" to the ECU and run through a diagnositic but that means I would probably have to spend more money than I want to at my local dealerships (they didn't even know there was a temperature sensor on my Buell when I called them) so I am hoping someone can maybe point me in the right direction. It is a 2004 XB12R with the race kit. Thanks for the help in advance. Dale | ||
| Fx1200 |
I had a recent fan failure on my '06 Lightning. The fan would run but it strained and ran at varying speeds. I removed it and found that the motor bearings were on the verge of seizure. I feel that the lubricant used in the motor is breaking down due to the enormous heat generated by the rear head and the bearings are failing as a result. The replacement works well. It was not replaced under warranty as the dealer said the fans were back ordered until August 17 and they were swamped with work in the shop. I went out of town to purchase a replacement, $67.00 w/BRAG discount. Maybe I can send the old one back and get a replacement from B.M.C! | ||
| Dmurphy |
Who makes the replacement? The fan seemed to run fine when I put 12V to it once it was pulled out of the bike but in case I end up buying one I would like to buy an aftermarket. Thanks | ||
| Fx1200 |
If the fan is out of your bike turn the blades and note if you feel any resistance. It should turn freely, if not the bearings are bad. The replacement I purchased was Buell Part # Y0050-02A8A. (Made In Italy) I do not know of any aftermarket fans being offered. Buell is going to have to lean on their supplier to come up with a more durable product. | ||
| Vonsliek |
chk for grounds against anything near wires from fan .. that was MY problem .. duly solved! | ||
| Kdan |
My fan bearing went and I had an oscillating fan for a while. My fan fuse blew and my check engine light came on. I replaced the fuse to get home, bought a new fan and all was well after that. Doesn't sound like your problem, but that's been my experience. | ||
| Buellgirlie |
i removed my fan from the XB9R racebike. if you want it, drop me an offer for it, and i'll ship it out this week  D | ||
| Vaneo1 |
just switch with one of those guys who hate their fan. | ||
| Coops53233 |
i had a similar problem. my ETS went bad. replaced it, reset the tps, and everything's cool (literally) now. | ||
| Bosezone |
My fan went out as well. I did exactly what you did and found the diagnostics all showed everything was fine. It worked when I applied 12 volts just fine. After riding the bike enough to know the fan should run at shutoff, I parked it and it did not run. After that, I put all the meters and dignostics away and reverted back to the ancient techniques. I tapped it with the butt of a screwdriver and it kicked and tried to run. As it turned out, it would work fine until it was really hot, above maybe 350 degress or so. In otherwords, when it was not needed it worked fine and when it was needed it wouldn't. So it was very hard to diagnose. Check continuity to the fan from it's connector when it is hot, real hot. Or give it a tap. If your lucky, it will show itself like mine did. Dealer verified my findings and replaced it under warranty. Bike had 6k on it. |
