Overcharging Fault Code on 2014 V7

[mr_pacman]

I've got a 2014 North American spec V7 racer.

I used the guzzidiag software to pull any fault code this past weekend and there is an overcharging voltage battery fault code. I cleared it, went for a ride and it's back again.

I've read about the faulty voltage regulator/stator on some V7 models.  Would this fault code suggest this is the issue?

Did anyone company ever come up with a plug and play replacement part?  Is it worth ordering a new factory Guzzi part from the dealer to replace it?

Thanks
james

[guzzisteve]

I would search for Vagrent's V7 alt change and he also had a VR go bad, plenty to swap in just ask Roy. I think he had an issue or solved one.
Search is your friend.

[Kev m]

Known problem on the regulator. Todd might sell a plug and play fix. Many of us used another direct source for Mosfet units that required we cut and solder the wires for the connector.

That may have changed to plug and play by now.

Check old threads about overcharging V7's

I would search for Vagrent's V7 alt change and he also had a VR go bad, plenty to swap in just ask Roy. I think he had an issue or solved one.
Search is your friend.

That was a V7III and likely different from the pattern bad regulators on the 2013-14 MkI V7s. But it's possible.

[guzzisteve]

You have a better memory than I. I do remember them finding the same stuff almost.

[Kiwi_Roy]

https://www.thisoldtractor.com/guzzi007/schematics/2013_V7_Series.gif
Carl's schematic shows a single phase alternator, I was surprised to find a 3 phase alternator on my 2017
Just about any regulator for a permanent magnet alternator would work.
I never had an overcharging issue, mine was the opposite.

[Vagrant]

My 2017 III had the bad stator. Replaced with a chinese part at 1/7 the cost.
My 2015 had the bad regulator putting out over 17 volts. Just put a meter on yours. Mine was replaced under warranty but I'd get the Mosfit if it happened now.

[mr_pacman]

My 2017 III had the bad stator. Replaced with a chinese part at 1/7 the cost.
My 2015 had the bad regulator putting out over 17 volts. Just put a meter on yours. Mine was replaced under warranty but I'd get the Mosfit if it happened now.

This one appears to be plug and play and fits a 2014 V7 Special, which means it should also work on my 2014 V7 Racer:

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

[Kev m]

This one appears to be plug and play and fits a 2014 V7 Special, which means it should also work on my 2014 V7 Racer:

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

Yup that looks right compared to a photo of mine on a bench.

[guzzisteve]

This looks to be same, on sale------

https://www.euromotoelectrics.com/MG-VoltRectOE-p/mg-voltrectoe.htm

[Kev m]

This looks to be same, on sale------

https://www.euromotoelectrics.com/MG-VoltRectOE-p/mg-voltrectoe.htm

Yeah but that's the stupid original one set to allow a charge rate of 15V and were failing in the 15.5-17V range.

I much prefer the Mosfet one regulated to 14.5V personally.

[Old Jock]

Yeah but that's the stupid original one set to allow a charge rate of 15V and were failing in the 15.5-17V range.

I much prefer the Mosfet one regulated to 14.5V personally.

I agree, if the Alternator is 3 phase then the Reg/Rec I'd defiantely go for is the Shindengen FH0020AA, (I put one into a Ducati 1098) but cheap they aren't, although cheaper than the EuroMotoElectric unit

Roadster Jack is the guy to contact on them, pices start at about $120 but probably around $150 for a kit with plugs and wiring

https://roadstercycle.com/index.htm

[mr_pacman]

I agree, if the Alternator is 3 phase then the Reg/Rec I'd defiantely go for is the Shindengen FH0020AA, (I put one into a Ducati 1098) but cheap they aren't, although cheaper than the EuroMotoElectric unit

Roadster Jack is the guy to contact on them, pices start at about $120 but probably around $150 for a kit with plugs and wiring

https://roadstercycle.com/index.htm

What this this Mosfet one that appears to be plug and play?

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

Any concerns with one like this?  Seems to be ready to go and the price is reasonable and plug and play.

[Old Jock]

What this this Mosfet one that appears to be plug and play?

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

Any concerns with one like this?  Seems to be ready to go and the price is reasonable and plug and play.

All I can do is recommend something I'd go for that I've used and has a great reputation to boot. It's the "go to" as a replacment for Ducati owners and is a stock part for Yams.

I don't know that Reg/Rec you've referenced so I can't comment on it & by that I'm not implying in any way that it's worse than the Shindengen, it might be better for all I know

The spec looks fine and at 50A load it's the same as the Shindengen.

There will be many out there that can do the job for sure, so go for what suits you best and what you're comfortable with.

[Kiwi_Roy]

My 2017 III had the bad stator. Replaced with a chinese part at 1/7 the cost.
My 2015 had the bad regulator putting out over 17 volts. Just put a meter on yours. Mine was replaced under warranty but I'd get the Mosfit if it happened now.

I have to tell you the original was a Chinese one also, probably part of the reason it failed in the first place. When they sent me a replacement there was no packing between the rotor and stator, the field kept the two parts together and every time there was a bump the parts crashed together and damaged the coils, they just need a piece of cardboard to stop that happening.
The Chinese regulator looks just like a Shindengen, hopefully made under licence.

[mr_pacman]

As an update. I installed the new Mosfet unit from RMStator (got here in 2 days) and the multimeter is showing 14.4v at idle and 14.5v at sustained 3,000rpm to 3,500 rpm. This is much better than my stock unit. I'll load up the guzzidiag software tonight, delete the overcharging fault code and see what happens after I ride the bike around. However I'm optimistic this new stator has solved the issue.

Thanks for all of the help with this

[Kev m]

As an update. I installed the new Mosfet unit from RMStator (got here in 2 days) and the multimeter is showing 14.4v at idle and 14.5v at sustained 3,000rpm to 3,500 rpm. This is much better than my stock unit. I'll load up the guzzidiag software tonight, delete the overcharging fault code and see what happens after I ride the bike around. However I'm optimistic this new stator has solved the issue.

Thanks for all of the help with this

Wait new stator? Not regulator?

[mr_pacman]

Wait new stator? Not regulator?

Sorry my mistake. It was the voltage regulator that I replaced.