| Author | Message | ||
     Fzrider |
Hello everyone. I am new to this site. Bought my Xb9S 2003 a couple months ago -new. I love it but now it has 2000 miles and is blowing cooling fan fuse. The dealer can't look at it before Monday, so I am trying to salvage my weekend riding plans. Does anybody had this happen? I followed the manual diagnostic flow chart: there is no short on the fuse box but my fan shows continuity. The flow chart says to replace fan if fan tests positive on continuity. I am suspicious of my fan being cooked because after the test, I replaced the fuse and let run the bike in the garage. The fuse did not blow, the fan did not come on either (I did not let it run more than 10 minutes in case I damage the engine)however the fan came on when I shut down the engine!!! So the fan works. How come it test positive for continuity and can still work? I am lost. Anybody got any suggestion? Thanks in advance. | ||
| Fullpower |
very well, you have proven the fan to be functional, and the temp sender is also working. look for rubbed or chafed wire to fan. | ||
| Tunes |
Having just recovered from a fuse blowing issue, I back Fullpower's suggestion of looking for an exposed wire in the fan circuit, shorting against the frame. | ||
| Jerseyguy |
I had the exact same problem. The bottom rear edge of the back cylinder's valve cover is very sharp. It rubbed through my fan's power lead in about 1K miles for me. Pull off the seat and trace the leads from the fan back & you'll find your gremlin. I taped it up and used a wire tie to keep the leads routed properly. | ||
| Fzrider |
Thanks. I am going to check for shorts again tonight. From what I remember, the wires from the harness to the fan are about 2 inches from the cylinder head, but it is very difficult to see in that small space. What puzzle me the most is that my fan test positive for continuity and still works when I turn the engine off. I thought that when there is no resistance in a motor it is because there is short in the motor? Another thing that is puzzling is that when the fuse blows, on the highway, the engine light comes on and the engine start 'missing' until I replace the fuse. I will re-check for shorts and repost results. | ||
| Jerseyguy |
I checked for shorts too & didn't find any. The wire only shorts to the engine occasionally when a bump or the vibration is just right. You need to visually inspect the wire. I pulled the fan out of the bike to do it. Yes a PITA but you have to do it. |
