Author Topic: 2013 - 2015 V7 over voltage problem & poll  (Read 50151 times)

Offline spowell

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Re: 2013 - 2015 V7 over voltage problem & poll
« Reply #300 on: June 24, 2016, 07:24:13 PM »
Question for someone who knows more about mc electrical systems than I do:

So, I changed my VR last night because it was running at 14.1 at idle and 15.2v at 3000 rpm. Swap was easy and when done, I started the bike and my voltmeter indicated 13.8 at idle and 14.1 at 3000rpm. So, I thought all good. I went for a 2 hour ride today, (75% stop and go, 25% hwy with three stops) and when I got back home, I checked the voltage again. Now its reading 12.4 at idle and 13.2 at 3000rpm. So, a now little bit concerned. Seems a bit low.

Just put it on the tender and had a solid orange light (indicating less than 80% charged) and after 10 min solid green (indicating fully charged).

Bad battery or bad VR or something else?  I have a 2014 V7R with the original battery. Bike has been sitting for a week before I did the VR swap. Thoughts?
« Last Edit: June 24, 2016, 07:27:35 PM by spowell »
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Offline jas67

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Re: 2013 - 2015 V7 over voltage problem & poll
« Reply #301 on: June 25, 2016, 08:08:09 AM »
Sounds like a bad connection or bad VR.
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Offline JProdun

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Re: 2013 - 2015 V7 over voltage problem & poll
« Reply #302 on: August 27, 2017, 07:26:04 PM »
Looks like i'll have to measure mine as well. Mine is a '14 with no issues at this point, but doesn't mean it doesn't exist.

So is there a plug and play replacement available at this time?

Thanks


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Online Kiwi_Roy

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Re: 2013 - 2015 V7 over voltage problem & poll
« Reply #303 on: August 28, 2017, 04:05:54 AM »
Before changing out the reg I would inspect the grounding and the multi-way connector (1) very closely.
http://www.thisoldtractor.com/guzzi007/schematics/2013_V7_Series.gif
The wiring between alternator (23) and regulator (24) looks straight forward but sometimes there are hidden features

Don't forget to scrape and Vaseline the battery terminals.
Also inspect the 30 Amp fuse for discolouration of the plastic, the VIIs used to fry that up pretty good.
The schematic shows the battery lead connected Tee fashion, I doubt it's really like that.

I haven't had a close look at a V7 but I wouldn't be surprised if there's some simple fault causing the over Voltage similar to the VII
« Last Edit: August 28, 2017, 04:27:24 AM by Kiwi_Roy »
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Re: 2013 - 2015 V7 over voltage problem & poll
« Reply #303 on: August 28, 2017, 04:05:54 AM »

Online mr_pacman

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Re: 2013 - 2015 V7 over voltage problem & poll
« Reply #304 on: April 17, 2021, 12:38:14 AM »
Bumping this thread.

Did anyone find a plug and play solution that didn't require cutting wires (and then having to crimp/solder) or fabricating a plate to replace the voltage regulator?

I've got a North American spec 2014 V7 racer that is charging in the mid 15's.

This one appears to be a plug and play unit but curious if anyone has used it:

https://rmstator.com/en_us/mosfet-voltage-regulator-rectifier-for-moto-guzzi-california-vintage-1100-nevada-750-v7-special-750-2006-2014

Thanks
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Offline mechanicsavant

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Re: 2013 - 2015 V7 over voltage problem & poll
« Reply #305 on: April 17, 2021, 06:41:06 AM »
While doing my pre purchase research I saw this issue mentioned. So , shortly after I brought my 16 V7 II home I fitted a voltmeter purchased from Aerostich itís a wee unit that i tagged into the b+wire on the accessory plug up by the steering head . Iíve, so far not seen anything over 14.5 v . It cycles all the time between 12.5 v & 14.5 v . So , keeping my fingers crossed . 19k Mi. So far & I run a jacket heater in cold temps .

Offline SmithSwede

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Re: 2013 - 2015 V7 over voltage problem & poll
« Reply #306 on: April 17, 2021, 12:00:03 PM »
Ok, Iíll follow up on my prior post back in 2016.  I still have the original R/R that charges a bit high. Bike is now at 120,000 miles.  Nothing bad has happened; entire electrical system works great.   I tend to think Guzzi designed it this way and there is nothing to worry about. 
« Last Edit: April 17, 2021, 12:27:35 PM by SmithSwede »
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Offline Vagrant

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Re: 2013 - 2015 V7 over voltage problem & poll
« Reply #307 on: April 17, 2021, 03:25:14 PM »
Didn't you have to replace several cam position sensors?
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Re: 2013 - 2015 V7 over voltage problem & poll
« Reply #308 on: April 17, 2021, 05:25:00 PM »
Ok, Iíll follow up on my prior post back in 2016.  I still have the original R/R that charges a bit high. Bike is now at 120,000 miles.  Nothing bad has happened; entire electrical system works great.   I tend to think Guzzi designed it this way and there is nothing to worry about.

When you say charges a bit high, how high?
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Offline SmithSwede

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Re: 2013 - 2015 V7 over voltage problem & poll
« Reply #309 on: April 17, 2021, 07:11:27 PM »
Didn't you have to replace several cam position sensors?

Yes, I have.  But Iím convinced that the cam position sensors do not ďseeĒ system voltage.  I could be wrong.  The ďfailedĒ sensors were not open circuit or burnt, and passed the Ohm test.  Iím pretty sure my problems were bad connection or corrosion at the connector. 
« Last Edit: April 17, 2021, 07:12:22 PM by SmithSwede »
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Offline SmithSwede

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Re: 2013 - 2015 V7 over voltage problem & poll
« Reply #310 on: April 17, 2021, 07:13:10 PM »
When you say charges a bit high, how high?

15.37 v above 3,500 rpm
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Online Kev m

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Re: 2013 - 2015 V7 over voltage problem & poll
« Reply #311 on: April 17, 2021, 07:20:28 PM »
15.37 v above 3,500 rpm

Thank you.

If you would continue to indulge, can you tell me about the battery/batteries?!?
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Offline SmithSwede

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Re: 2013 - 2015 V7 over voltage problem & poll
« Reply #312 on: April 18, 2021, 12:36:09 PM »
Thank you.

If you would continue to indulge, can you tell me about the battery/batteries?!?

Of course.  Data = good.  And agreedóthe only potential downside I see from arguable excess voltage is reduced battery life. 

My batteries always tend to last about 3 to 3.5 years.  I think thatís due to the Texas heat and the fact that I ride a lot.   So there are a lot of starting cycles per unit time.  Iím not sure you can validly compare how long a battery lasts unless you also know how much use it got. 

3 years is not unique to my arguably overcharging Guzzi.   Had the same experience on a Yamaha FJR, BMW F800S, and Ninja 250.  I had a voltmeter on the BMW and it was ďnormalĒ in the sense of providing about 14.7 max volts.   Batteries didnít last any longer. 

I always buy Yuasa batteries.   Maybe Iíd get better life from a different brand. 

Final thought.   A weak or failing battery is the source of many woes and heightens unreliability.    So I tend to be pretty aggressive about replacing a suspect battery since I figure I avoid a lot of hassle.    And Iíve twice had a battery totally and completely fail with almost no warning.   I figure one expensive tow service you avoid pays for a lot of batteries!
« Last Edit: April 18, 2021, 12:38:23 PM by SmithSwede »
Accentuate the positive;
Eliminate the negative;
Latch on to the affirmative;
Don't mess with Mister In-Between.

Online Kev m

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Re: 2013 - 2015 V7 over voltage problem & poll
« Reply #313 on: April 18, 2021, 12:39:49 PM »
Of course.  Data = good.  And agreedóthe only potential downside I see from arguable excess voltage is reduced battery life. 

My batteries always tend to last about 3 to 3.5 years.  I think thatís due to the Texas heat and the fact that I ride a lot.   So there are a lot of starting cycles per unit time.  Iím not sure you can validly compare how long a battery lasts unless you also know how much use it got. 

3 years is not unique to my arguably overcharging Guzzi.   Had the same experience on a Yamaha FJR, BMW F800S, and Ninja 250.  I had a voltmeter on the BMW and it was ďnormalĒ in the sense of providing about 14.7 max volts.   Batteries didnít last any longer. 

I always buy Yuasa batteries.   Maybe Iíd get better life from a different brand. 

Final thought.   A weak or failing battery is the source of many woes and heightens unreliability.    So I tend to be pretty aggressive about replacing a suspect battery since I figure I avoid a lot of hassle.    And Iíve twice had a battery totally and completely fail with almost no warning.   I figure one expensive tow service you avoid pays for a lot of batteries!


 :thumb:

Thanks.

More to think about. But you've certainly made an argument for not worrying about it so much.
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Offline fossil

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Re: 2013 - 2015 V7 over voltage problem & poll
« Reply #314 on: April 21, 2021, 05:53:54 AM »
Hmmm.... 2013 V7 Stone. First regulator, first battery. 32000 km. Even the first lamps are okay. However when I fitted the "super" lamps from Osram and Philips they lasted for 20 minutes...
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Re: 2013 - 2015 V7 over voltage problem & poll
« Reply #315 on: April 21, 2021, 06:23:01 AM »
A volt meter is a worth while addition indeed.

I still think an amp meter can be useful is you pay attention to it, and/or understand what it's telling you. Back when, I had them on several cars I had. When a battery began to fail, you could tell. A weak battery would charge a lot of amps but come up very quickly, weather it be a start cycle or leaving the lights on. A good battery would charge more slowly. It was a notable difference.

In any event, my III is running 14.2 except when stopped. It drops a bit but comes right back up once in motion again. I tied in as close to the battery as I could on a switched wire so I was not getting loss in the wiring. I figure the idea of doing this early on will help me know the condition of the electrical system as it ages, or suddenly changes.

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