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Old 03-13-2011, 03:43 PM   #1
ffr2370 OP
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Voltage regulator problems?

I have a 2008 950 SE I bought new, in 8000 miles it has been reliable as a swiss watch. Last weekend I decided to ride the Mojave Road from Barstow to the Colorado river solo, when I get to my destination at the river the bike wont restart, dead battery. Oh well, I figure the battery is toast, damn lucky I didn't get stranded in the middle of the Mojave desert! I get a jump from AAA and ride the slab 150 miles back to my truck, at about 148 miles the bike slows then sputters to a stop. Now here is where things get strange.... I hear this high pitched scream coming from under the seat, kind of like a tea kettle. Its the battery, its steaming...like a tea kettle. I take it out and through it on the ground so it doesnt spew any shit inside my bike while I walk back to get my rig.

Still just asuming the battery is bad I ordered one of those bitchen new Shorai batterys and put it in. Bike fires up with authority, I do a few donuts in my pasture and put the bike in the garage and shut it off. I hear the tea kettle again, the shorai is having a meltdown....shit, that fucker was expensive and worse everyone is out of stock!

Realizing now that my problems are elsewhere I jump start the bike with the charging lead removed, I measure the regulator output and it is 25v at idle and it climbs to 60+ when the revs increase. So I'm guessing the voltage regulator is bad and caused all this mess. Does this sound like a reasonable assumption, anything else I need to check?

Another side effect is my headlight is not working, assuming that the high voltage burned out the bulb. Can a faulty voltage regulator casue any other damage or otherwise shorten the lifespan of any other critical electrical components, like the ignition or alternator?

I would love to get the opinions from those who are knowledgeble of this topic or have expereinced someting simular.

Thanks,

Mark
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Old 03-13-2011, 05:16 PM   #2
Flueger
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My 2008 showed the same symptoms in around 10K early last year. I luckily checked the output of the regulator before I put a new battery in. The regulator was the culprit, with a new battery and regulator all is good.

A link to my battery singing in a SS bowl on the driveway, I too was lucky to get it out of the bike without incident.
http://950 SE Battery Venting Gas from Flueger on Vimeo.
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Old 04-20-2011, 01:55 AM   #3
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Quote:
Originally Posted by Flueger View Post
My 2008 showed the same symptoms in around 10K early last year. I luckily checked the output of the regulator before I put a new battery in. The regulator was the culprit, with a new battery and regulator all is good.

A link to my battery singing in a SS bowl on the driveway, I too was lucky to get it out of the bike without incident.
http://950 SE Battery Venting Gas from Flueger on Vimeo.

i had the same problem on my Ukrainian Tour, battery was singing,
I think problem was about SE construcion, so, my new VR (from 950 ADV), I instaled, on the lest side of airbox... that is good place for this.

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Old 05-20-2011, 12:02 AM   #4
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I know on a drz400 I had, the fix was to put an yamaha R1 VR on and it was golden. I wonder what other bikes VR's would work? How much is the stock one from ktm?
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Old 05-23-2011, 07:49 AM   #5
Colorado Uli
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Crap! My brand new AGM battery went into overheat mode and ended up wherever dead batteries go after they die. With the stench of the sulfur, I thought it was the rapture (it WAS May 21, after all).
So I got stuck at Lake Powell for one night before a buddy came to rescue me with truck and trailer -- been broke down in worse places.
This '08 SE is on it's second VR and if it turns out to be that it is at fault (after all, it may be a faulty battery) I will seriously consider relocating it as well.
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Old 05-23-2011, 04:47 PM   #6
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ex 1- that is a good place for it. I have my HID ballast or some f'n thing in there right now. Think I'll be searching for a new location.

Colo Uli- sorry I didn't find my phone sooner! Sorry man, you've suffered some shit with that fuckin bike. Here's to smooth riding!:
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Old 04-29-2012, 07:49 AM   #7
nattyMo
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I replaced my stock VR with a MOSFET unit from Rick's Motorsport Electrics. http://www.ricksmotorsportelectrics.com/

Relocated to the side of the airbox as pictured below. I held the VR up to the side of the Airbox drilled two small holes and attached with self tapping screws. Replaced the Rick's/stock Stator/VR connector with a sealed connector from Eastern Beaver. Used the Delphi MeriPack 280 for 10-12 AWG.
http://easternbeaver.com/Main/Elec__...ripack280.html

Fingers crossed this will be the last time I need to replace a failed VR.

BTW, the install was easy. Took about twice as long as swapping the stock VR, mostly due to working out how to mount it to the airbox (took the lid off to be sure I wasn't drilling a hole into a carb) and replace the stock connector.

Installed:





Quote:
Originally Posted by ex1 View Post
i had the same problem on my Ukrainian Tour, battery was singing,
I think problem was about SE construcion, so, my new VR (from 950 ADV), I instaled, on the lest side of airbox... that is good place for this.


nattyMo screwed with this post 10-13-2012 at 06:06 AM
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Old 03-13-2011, 05:32 PM   #8
cpmodem
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ECU might still be OK since it was running when you shut it off. I'd just replace the VRR and battery, make sure of the correct voltage, and ride it to see if anything else is fried. Oh yeah, you might want to install a voltmeter on your bike somewhere where you can see it while riding. Very handy item.
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DISCLAIMER: All observations made in this post are mine and based solely on my own anecdotal experiences, and may contain large doses of facetiousness. YMMV, of course. You are "on your own", and I take no responsibility if someone tries anything in this post and gets into trouble with the law, damages their person or property, or goes blind. Take everything you read or hear "anywhere" butt especially on the Web with a large dose of salt.

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Old 03-13-2011, 05:53 PM   #9
Stobie
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My SE had a bad VR from the factory. The battery was boiling after the first ride, VR replaced at 35 miles. The replacement is still good at 22k. Mine is an '07, bought new in November of '06.
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Old 03-13-2011, 06:59 PM   #10
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I am at this point again.. 44,000 miles and going to put the fifth voltage regulator on when it arrives...

Only had one not over charge the battery, the other three boiled and ruined the batteries..

It has to be the heat from where it is located..

I have over a grand in batteries and voltage regulators this is complete bullshit...

The last two times (once being towed)I have been able to get to an auto parts store and buy a truck battery and put it on my rear rack then wire it in and disconnect the voltage regulator to get home..

The 07 and up 990's have a different VR on them, anybody know why?

Stator is good, grounds are fine..

I am at a loss here as to what is causing it, it has to be the heat from the exhuast...
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Old 03-13-2011, 07:10 PM   #11
cpmodem
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Heat from the exhaust?
What bike did you say this was?
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DISCLAIMER: All observations made in this post are mine and based solely on my own anecdotal experiences, and may contain large doses of facetiousness. YMMV, of course. You are "on your own", and I take no responsibility if someone tries anything in this post and gets into trouble with the law, damages their person or property, or goes blind. Take everything you read or hear "anywhere" butt especially on the Web with a large dose of salt.

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Old 03-13-2011, 07:22 PM   #12
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Old 09-20-2011, 04:45 PM   #13
Uller
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I'm not 100% sure this is a completely viable solution. Would probably need to double check that it would work however, I used an FH012 like the one from this company, (http://easternbeaver.com/Main/Elec__...onnectors.html) and his connectors to solve my R/R issues on my 690 Enduro. I wired it up directly to the battery in a location that received good air flow.

You can also get them here: http://roadstercycle.com/Shindengen%...rade%20kit.htm
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Old 04-27-2012, 07:33 AM   #14
LukasM
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Why are there so many people replacing the failing stock R/R with another stock one?

Uller mentioned the solution last year (I gave him the idea ), the Shindengen MOSFET R/Rs are a very popular upgrade on many bikes that have problems with R/Rs...

Costs less than stock and is a better design, in OEM quality.

Quote:
Originally Posted by Uller View Post
I'm not 100% sure this is a completely viable solution. Would probably need to double check that it would work however, I used an FH012 like the one from this company, (http://easternbeaver.com/Main/Elec__...onnectors.html) and his connectors to solve my R/R issues on my 690 Enduro. I wired it up directly to the battery in a location that received good air flow.

You can also get them here: http://roadstercycle.com/Shindengen%...rade%20kit.htm
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Old 04-27-2012, 08:02 AM   #15
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Originally Posted by LukasM View Post
Why are there so many people replacing the failing stock R/R with another stock one?

...
Most likely since it is Plug and Play. ...and many are not comfortable with messing with the electrics and having all the proper materials/tools to do the job.

Secondly, when VR's go bad (without an appt.), quickest way and most sure to get back on the road is to replace with an OEM.


Your idea(s) are great... perhaps if someone could put a "How To" or a Kit together it would be easier to entertain.
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