| Author | Message | ||
     Justyb |
My 05 xb12r has had the voltage regulator replaced 4 times by the HD shop and im still having problems with it. about 20 miles after they(HD service dept) ran a dionostic and replaced a fuse and the VR the check engine light came on then 2 miles later the speedomter and tacometer droped offline. the bike went 3 miles then the engine cut off. after pushing it 3 more miles to the house i was about to drop buell forever. i cooled down and remember why i love it so much and took it back to HD and they said it was the VR again. anyone have the same problem or know what i can do to fix this. anything at this point will help. | ||
| Reepicheep |
Bad battery? Bad ground? Failing Stator? | ||
| Buell_bert |
Also maybe the regulator wiring harness. If it starts OK it may not be the Batt. Make sure all the reg. mounts and grds. are clean for heat dissipation and connection. Stator? Hey I went through 2 Batts. and 1 VR before I figured it out. Except it was on a 74 Superglide. | ||
| Justyb |
new battery, staror was replaced twice, and now its back in the shop so when i get it back i will check the harness and the ground. last time i got it back i looked over the harness and ground and they seemed fine, one more look wont hurt. is there a upgraded VR i could buy or some aftermarket parts that take up some of the volts that might be overloading the system? | ||
| Reepicheep |
There have been problems with the connector between the stator and the bike... so check that socket. I don't know where the "ground strap" is on an XB, but I would try and find and pull and clean that as well. The stock VR is sufficient when things are right... so I don't know if an aftermarket one will help you. Know anybody with an oscilloscope? They can tell you if there are transients getting out, and a good old fashioned DVM will tell you if the DC regulation is good and the battery is doing it's thing right. | ||
| Justyb |
i just got the bike back from HD today and they said that the battery had a bad cell, strange becouse i put a new battery in 3 months ago. we will see how long it last this time. i am going to check the harness and the grounds again just to make sure. thanks for you help. | ||
| Reepicheep |
What kind of battery? The stock unit is a fairly sophisticated absorbed glass matt unit, far more durable then traditional batteries. | ||
| Justyb |
it is the stock battery from harley. 75 bucks so i hope it works. 50 miles and it doing well. i pulled all the cowlings and checked the harness and the grounds and it looks in good shape. | ||
| Reepicheep |
Thats the one. It's expensive relative to batteries that are not as fancy, but priced very fairly compared to other batteries like it. I have recommended it to people for non motorcycle applications (as it is priced fairly, is nice and compact and makes a lot of power, and is probably stocked on a shelf nearby). | ||
| Justyb |
well its back again. same problems. it didnt start so i jumped it and started to ride it to the HD shop and 5 miles later it guit on me at 80 mph. im starting to think it not the VR or the Charging system. could it be a cross short or a short to ground, what about the race ECM? the HD service tech. said they called HD and Buell thech. and they said they dont know any more then we do. its at the shop and it passed the Dionostic test and the stators bench tested fine, along with the new Vr and battery it should run fine. last time it ran for 100 miles. should i request a new harness? | ||
| Bad_karma |
Justin Get a voltage meter and check the voltage. Should see near or above 14 volts when running above 2 grand. This sounds like a load problem. Joe | ||
| Reepicheep |
Sounds like a fussy problem... and it sounds like the dealer is engaging the factory to find it. The three things they already replaced are the most common causes of the problem you are describing. It could be an issue with the harness, though I would expect that would be blowing fuses (though not necessarily). It could be multiple issues simultaneously that is making a couple small minor things be major things as well. So either you go on the wild goose chase, or they go on it. It'll eventually be caught, but there could be a lot of time and energy invested between here and there... if the dealer is supporting you, I would say let them do it. Stick with it and keep a positive attitude. Electrical problems like this are really annoying, but once you find them (and I suspect you will find at least two), they are quick and easy to fix, and everything is suddenly magically better again. | ||
| Buell_bert |
Holy jumpin up and down. And I thought I had problems when my 3 kids were all in their teens at the same time. I've been following this one and want to see it's conclusion. | ||
| Buell_bert |
I don't know the wiring on it but is there a circuit breaker that could be burn't closed? And I'm sure they did a DC amp draw when it's running or not. | ||
| Justyb |
ok so heres the latest up date. after trying to reproduce the problem HD finally found serveral corroded pins and a couple fuses in the fuse box. so they replaced them and so far its been working great. hopefully it lasts for many miles. thanks for all your help. |
