| Author | Message | ||
     Mmcn49 |
Just completed several winter projects on the TT. One of them was installing two WB sensors and LC-1 controllers. When I went to start the bike yesterday it cranked for about two seconds then stopped. Cycled the key switch and tried again. This time it cranked for no more than a second. After that the engine wouldn’t turn over. Troubleshooting showed that the Start Relay coil is shorted to Zero Ohms. Coils in the other two relays are 44 and 50 Ohms. Additionally, none of the fuses blew and there was no hint of a “Smoked” smell anywhere. Now I’m trying to figure out what shorted the relay coil. Additional Background: The bike was ridden through November. I pulled the headers to have an o2 bung welded in. Prior to rolling the engine I bled the injectors. As per the manual after disconnecting the fuel pump I cranked the engine over for probably 5 to 10 seconds. To power the LC-1’s & WB sensors, I used a fuse tap at the ignition fuse. Other winter work: Installed Uly bars and cables, brake pads and lined the fuel tank with heat barrier. When something like this happens after doing work, it is usually related to that work. I went over the bike when it wouldn’t start but could find nothing wrong other than the relay. Could cranking the bike for 10 seconds to bleed the injectors have shorted the relay coil? Before trying to start the bike, should I have cleared the cylinders first by cranking for a few seconds with the spark plugs out? For data logging I’ve paralleled power feeds to the two LC-1’s & WB’s. I do not know the actual current draw for each unit but the manual says they should be protected with a 5 amp fuse. From the fuse tap at the 15 amp ignition fuse, I protected the two controllers & WB’s with a 10 amp fuse. Assuming that each unit draws 2-3 amps, is a steady 4-6 amp current draw to much for the fuse box? Your thoughts. Any ideas, comments or suggestions are all appreciated. | ||
| Damnut |
They just go. I was out riding and stopped to grab lunch. I finished lunch and went to start the bike and nothing. Blown relay. I switched it with another and rode home. I put a spare in the slot for one. I don't know which year it was but Buell change the old ones and there is an updated relay for our bikes. I have an 04 and it was an old style. I think the old one is gray and the new white. I may be wrong about the colors. | ||
| Skinstains |
I always keep two under the seat with the spare fuses and tools. | ||
| Mmcn49 |
I carry spare fuses and tools but didn’t realize that the relays were so unreliable. Chi-Coms made the fuse block so the relays are probably commie parts as well. Anyone have a NAPA part number? |
