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Biffdotorg
| | Posted on Wednesday, July 01, 2015 - 08:55 pm: | 
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Thanks guys for the tips. I should be good. I am going to update my VR thread with details, but it looks to be the VR after my replacement tonight.
PS: the Voltage meter in he 12v socket was gold other than shutting off when the circuit was killed by the ECM.
(Message edited by biffdotorg on July 01, 2015)http://www.badweatherbikers.com/buell/messages/142838/761837.html?1435799148
(Message edited by biffdotorg on July 01, 2015) |
Motorfish
| | Posted on Wednesday, July 01, 2015 - 10:06 pm: |
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http://www.badweatherbikers.com/buell/messages/142 838/335986.html?1202653245 |
Smac
| | Posted on Friday, July 10, 2015 - 05:10 pm: |
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Twisteduly,
Odd that you recently mentioned how weird it is to have this happen to 3 '08 XTs all of sudden...well add another to the list to make it 4! I just logged onto to BWB to research my check engine light intermittently going on shortly after start up & going away...with no other issues noted on the bike. My '08 XT has 32k miles with original VR & Stator (2nd battery). The on/off issue happened only once in a while some time ago, but has become more of the norm lately this summer.
Sounds like my VR is most likely the culprit after reading feedback from Trevd & Biffdotorg. I will need to do some diagnostic work on my own to verify my issue...I appreciate everyone's comments & advice.
-Sean |
Biffdotorg
| | Posted on Monday, July 13, 2015 - 02:34 pm: |
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Sorry to hear about yours as well Sean. At least we all have had very similar symptoms.
There is still the chance that your stator could be bad, and most will say that the stator will take out a new VR if not replaced first.
That being said, if your battery is not draining, and the CEL goes away like ours, I think it's a safe bet to place your order for the VR and feel confident it will solve the problem.
That is assuming you have run the CEL code to find it is code 16. That and the symptoms point to the VR.
Al emailed me as well to be sure that the VR is not insulated from the frame. It needs to have full contact as it uses it as the ground. If there is paint or any insulator the VR cannot do it's job to dispel that voltage. Overheat and failure occurs at that point.
I did note that my old VR had no Loctite on the screws and that one had backed out 95% and should have fallen out. Not sure if tightening those down would have made a difference. It could have. Check your screws.
On the new VR, I did put a little Loctite Blue on the screws. I hope this did not insulate those screws from proper ground. It seems to be working great so far.
Good luck!
Mark
(Message edited by biffdotorg on July 13, 2015) |
Smorris
| | Posted on Monday, July 13, 2015 - 08:54 pm: |
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can u clarify about the voltage shut off at the accessory socket. when does this occur. i did the fatty mod. turn key on green then amber then red before even thumbing the starter. is that the norm? thanks |
Froggy
| | Posted on Monday, July 13, 2015 - 09:40 pm: |
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quote:can u clarify about the voltage shut off at the accessory socket. when does this occur
On 2008+ models, the outlet will switch off if the battery voltage drops below 11.9v for more than 2 seconds. Given normal operating voltage is approx 14.2v, if it is slowly dropping you will have plenty of warning if there is a charging issues. The 03-07 bikes do not shut the outlet off.
Here is the voltage readout from the Signal Dynamics voltmeter that is
popular on here:
flashing green: above 15.2v (over-voltage is bad)
steady green: 12.9 – 15.1v
steady amber: 12.7 – 12.8v
steady red: 12.1 – 12.6v
flashing red: below 12v
You will have a steady red or flashing red before the outlet ultimately shuts down. If you do wire the voltmeter into the accessory outlet, you will heave plenty of warning before it shuts the outlet and voltmeter off, but at that point you got bigger things to worry about |
Twisteduly
| | Posted on Tuesday, July 14, 2015 - 07:44 pm: |
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OK, where to start...
I did all the preliminary checks of the stator prior to placing the order for the VR, and they checked good and in range.
I installed the new Voltage regulator and it has no dc output.
The original VR had intermittent charging woes then finally stopped all together.
I redid the stator test with 2 different meters, ohms in range, not grounded, 30-36 vac at idle and 50 at approx 2,000 rpms in range of the diagnostic manual, even did the sniff test at the inspection cover.
Re checked my work and the connections were proper.
I dropped the bike off at my buddies shop to have a different set of eyes and voltmeter, along with the manual for him to test it.
However small the odds are of getting a defective part may be, throw me into the equation and that gets chucked out the window.
I'll have the results tomorrow afternoon. |
Twisteduly
| | Posted on Tuesday, July 14, 2015 - 07:48 pm: |
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Biffdotorg - mine were loose to, no loctite, all three "finger" tight. |
Reepicheep
| | Posted on Tuesday, July 14, 2015 - 08:42 pm: |
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Sounds like you did the stator check right. Maybe check the grounds on the VR? |
Ulyranger
| | Posted on Wednesday, July 15, 2015 - 10:44 am: |
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Make it 5 '08 XTs. My VR appears to be failing the other way. No CELs but blowing headlight bulbs and when I put a meter to the battery after start up can read 15-16+ DCv. Could grounding be an issue for over charging too?
Going to check ground next but will probably buy a new VR from American Sport Bike to have on hand before I fry something more pricey/ important than an H7...... |
Tootal
| | Posted on Wednesday, July 15, 2015 - 04:56 pm: |
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Ulyranger, your VR is bad but before you change it do every test the book tells you on the stator. I think there are three test. If any of the three test fail then the stator is bad. I changed the VR without testing the stator and fried my new VR so just making sure you don't lose any money unnecessarily.
(Message edited by tootal on July 15, 2015) |
Twisteduly
| | Posted on Wednesday, July 15, 2015 - 06:03 pm: |
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Well the verdict is in...
My results of testing the stator were confirmed by the shop, the stator checks out ok.
So due to the no returns on electrical parts, I have an expensive paper weight. My first factory HD parts purchase that wasn't a gasket or oring and it's defective part. And I don't have any recourse from American Sport Bike.
Anyone have the info for the MOSFET Voltage Regulator for an 08 XT? |
Ulyranger
| | Posted on Wednesday, July 15, 2015 - 09:25 pm: |
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Thanks for the advice Tootal, got a new VR and shop manual coming from American Sport Bike (yeah, I know should have gotten the manual before now... ). Will do the stator tests before installing the new VR, but needed that any way. Checked it out again today, cleaned up grounds, checked connections then fired the mother up on a multimeter. Went right up to 15+ after start up, then trickled up past 16, 18 and when it went north of 19 I shut her down. Guess I'm lucky I haven't fried a bunch of stuff on my last few rides.
Have to play locally on the KTM this weekend while the Uly waits for a fix..... |
Griffmeister
| | Posted on Wednesday, July 15, 2015 - 11:12 pm: |
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Anyone have the info for the MOSFET Voltage Regulator for an 08 XT?
According to the Roadstercycle website, the same VR can be used for either three phase or single phase stators. Just follow their wiring instructions. Of course that's if you go with the Shindengen. |
Ourdee
| | Posted on Thursday, July 16, 2015 - 02:14 am: |
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After I put the Shindengen on the 08XT it never blew another headlight bulb. During the monitoring phase of my disbelief, I used the single LED voltage indicator and a voltage meter with a needle. Both were wired into and mounted on the Uly. The LED would indicate high voltage and I would look at the needle. The analog meter would let me know when it was safe to switch to the high beam without burning it out too.
"Complete Mosfet Kit FH020AA DIY crimp or solder kit" Is what I used. It will work on all years of Ulys. Up to 07 had three wires from the stator. 08 and up had 2 wires from the stator, just one less wire to connect. |
Twisteduly
| | Posted on Thursday, July 16, 2015 - 06:33 am: |
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Thanks, I checked out his page. That's the direction I'm going, should I order his mount or just fab my own? |
Uly_man
| | Posted on Thursday, July 16, 2015 - 01:37 pm: |
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"No CELs but blowing headlight bulbs and when I put a meter to the battery after start up can read 15-16+ DCv". It will go to 15v but should me no more. Yours went to 19v plus so clearly a problem with the VR. The ECM (code 16) high limit for the CEL is, or should be, 16v. The low limit is 9.5v which is NO GOOD at all since the bike will be long since dead by the time it gets to that voltage. |
Biffdotorg
| | Posted on Thursday, July 16, 2015 - 05:38 pm: |
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Twisted, call Al on that if possible. He knows this is happening with all these '08's and we have been troubleshooting each one of them together.
Maybe he can swap that sucker out for you, if anything at a discount.
That does suck, but I do understand why the policy is there. It would be too easy to fry components during troubleshooting. |
Ourdee
| | Posted on Thursday, July 16, 2015 - 08:59 pm: |
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On the Uly, I drilled and tapped the bracket the OEM was mounted on. |
Slo1
| | Posted on Friday, July 17, 2015 - 12:36 am: |
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I think I need to look at my VR again. I thought it was a fluke that my 08 XT started eating headlights this spring. I replaced both with led headlights and haven't had any problems till recently the cel comes on right after taking off or with a downshift. I hooked up a meter that recorded the highest voltage before I replaced the headlights and never seen any spikes but maybe it's bad enough to see something now. |
Ourdee
| | Posted on Friday, July 17, 2015 - 01:09 am: |
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The double gage setup was how I found mine. Quite a few times as soon as the headlight blew the voltage was already back down on the analog. The LED got me to look at the analog prior to the headlight giving up the ghost. The funniest (but not at the time) was after dark in the rain one night. Heading home from work with 15 miles to go and the LED starts flashing, The analog is climbing faster than my tach.,and the low beam goes out. Without a thought I switch to the high beam before the spike is over and pop goes the high beam. Fun ride home, that. |
Trevd
| | Posted on Sunday, July 19, 2015 - 02:53 pm: |
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Just an update.
I've replaced my VR and took it for a good ride today. No CEL at all, no issues with anything. I haven't installed a voltage meter, so I'm not sure what it was at during my ride, but the no CEL is good.
About the headlights - I blew one last fall on one of my last rides of the year - not sure if it was related to the VR or just coincidence, but if it was related, that was how it started for me. |
Natexlh1000
| | Posted on Sunday, July 19, 2015 - 07:01 pm: |
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The bulbs in my uly don't last very long in comparison to the one in my X1. beats me why but I get about 10,000 out of them.
At least they are like $10 at wallyworld. |
Ulyranger
| | Posted on Wednesday, July 22, 2015 - 10:08 pm: |
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Update; received new VR today & installed, tested stator, hooked everything up, started bike and tested output, all good. Took it for a ride, dang it's nice to have confidence in your bike again.... |
Biffdotorg
| | Posted on Friday, July 24, 2015 - 10:11 am: |
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Nice work, that's awesome! It's amazing how a person's confidence is swayed so hard with one failed component.
Then how quickly it can be restored when it is a night/day resolution. |
Buhler1
| | Posted on Sunday, July 26, 2015 - 03:11 pm: |
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Did mine yesterday. 08 XT. 16,000 miles. Voltage would sometimes spike to light both red overcharge LEDs on my Kuryakyn meter shortly after starting. It would eventually settle back to normal but it was becoming more consistent. New regulator and all is back to normal. |
Phelan
| | Posted on Sunday, July 26, 2015 - 03:49 pm: |
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I bought a Mosfet type regulator/rectifier from Rick's Motorsports. I believe these are supposed to be plug and play, other than building a mounting bracket, however mine came with the proper Deaustch plug to the stator, but a Delphi power plug rather than the factory deaustch. I just cut off the Delphi plug and spliced on the Deaustch plug from the old regulator and it works great. |
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