| Author | Message | ||
     Thegovernor |
I have been having problems with my XB12S for two months now and have been to the dealer three times and they still dont know what the problem is. I will give the scenario and any help would be greatly appreciated. The reason I took it in the first time was because at random places throughout the RPM range, usually above 3000 RPMs but sometimes from zero up, it would miss or acted like it was not getting any fuel. There was no certain time that this would happen it was random times of riding it could be 10 minutes or two hours into the ride and at random RPMs. It would happen for a few minutes and then quit and then start again later in the ride. It might happen two times during a ride or many times. When it first started I was in the mountains and on the way back it did it constantly on the freeway even at 80 mph all the way home. No check engine light comes on so the dealer had no idea what it was and they would take short test rides and it never would do it with them. They had the nerve to say I was probably riding in to high of a gear. They reset the computer and said that should take care of the problem. It didnt, so i took it back. This time they kept it for over a week and the mechanic rode it numerous times and finally rode it home and the problem occurred. They called and said "they knew what direction they were going in," in other words there is a problem we just dont know what it is. They told me they reset both computers and that the throttle body was dirty and they were positive that solved the problem. Well again it didnt. However this time the problem occurs as I come onto the throttle usually under 3500 RPMs. This is really a problem in traffic and on roads I cant keep it pinned the whole time. When I turn the throttle it feels like it not getting any fuel and it continues to bog down until above 3500 RPMs. Could the mechanic have changed something with the fuel injection to make it have more fuel to solve the prior problem but caused the bike to do the same thing at a lower RPM. Im sorry this is so long but any suggestions or if anyone else has had similar problems, just something I can tell them to look at so I can ride my bike before winter would be great. Bike has 9300 miles and the buell race kit, but no other engine or airflow modifications. Thank You, Billy | ||
| Bubabuell |
Dealer should try new/different ECU and see if there's a change. Maybe check TPS as well. | ||
| Keith |
Fuel pump? | ||
| Jabrien00 |
I have the same problem it comes and goes but I left it alone because the dealer might •••••••• something and blame it on me in the process. I think they know what the problem is and they too lazy to put time and effort on the bike I maybe wrong but then again this is just what I think about dealers.  | ||
| BadS1 |
Govenor put your stock ECM back in on your own and see how she runs.Make sure you put a few miles on it so the ECM can adjust to the stock ECM.If it runs better you know its the Race ECM giving you trouble. | ||
| Deucelightning |
You might check and see if the wires to the ECM are rubbing the negative battery terminal. Seems that that can cause some problems. My symptoms were similar to yours at times. Here's a link to what fixed my problem: http://www.badweatherbikers.com/cgibin/discus/show.cgi?tpc=32777&post=312289#POS T312289 | ||
| Thegovernor |
Thanks for the ideas. I took the race ecm out and put the stock one back in rode for a while and the check engine light came on, any reason why? I came back put the race ECM back in rode for @75 miles and there were no problems at all, until this morning on the way to work and the same thing happened again. So I think you may be correct about the race ecm being bad. It is going back to the shop because I payed $180 last time and they did'nt fix a thing. Thanks again and hopefully this will take care of the problem. | ||
| Wyckedflesh |
When you put the stock ECM back in did you put the stepper motor for the exhaust back in as well even if you didn't put the stock exhaust back in, the stepper motor talks to the ECM. | ||
| Glitch |
Billy, in short, your problem Earl Small Harley Davidson the answer SMHD/Buell Also, from what I've seen here the 12 Race ECM has issues. The trouble code you got may have been from not hooking up the muffler valve, unless of course, you hooked it up. Hope all's well, and you make it to Bike Night tonight. | ||
| Krassh |
Is it more a lack of fuel or a miss? Does it happen more when it is damp? My 9s had problems with the spark plug wires rubbing on the frame and then mostly in a damp air it would arc and cause the bike to stumble like you are indicating. I know I have heard a lot of problems with the 12's ECU on this board, but you might want to inspect your plug wires for chaffing. | ||
| Macbuell |
Glitch, who works on your bike at Stone Mountain HD? I'm taking my bike there Saturday and they told me to ask for Clint. | ||
| Glitch |
There're all good techs over there. They've all had their hands on my bike. I'm so impatient, who ever wants to deal with me gets my bike. You may want to ask Rebecca, as she's being opinionated about who works on her bikes. | ||
| Macbuell |
Cool, thanks. | ||
| Stealthxb |
Macbuell... If Tom "The Swede" Erlandson is available he is my goto guy. | ||
| Thegovernor |
I know that is one of my problems, Earl Small, but they have ripped me off so many times now that this will be covered under their parts and labor warranty so this time they get to fix it for free. And believe me Stone Mountain gets it from now on starting with my 10000 mile service. No i did'nt hook up the muffler valve so that must have been the problem code that came on. You guys are so smart. I should just bring my bike to the vortex and let You (Glitch) ride it and see if you have any ideas. | ||
| Ingemar |
Did you check for an intake leak? I know I would. |
