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Author: RPJrRPJr Date: Jun 30, 2008 19:07
Can anybody enlighten me as to the following problem with a possible
cause....
Battery is getting drained while riding and if the bike is not keep on a
trickle charger over night - after about three days of commuting (about 10
miles each way) the battery will be dead. Volt meter test shows about 13v at
idle and about 14v a little above idle speed.
Went to dealer and asked about it and they confirmed that the volt numbers
are good but said I should see if there is a amp draw by measuring between
the negative terminal and the neg wire lead but I'm...
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Author: BryanUTBryanUT Date: Jun 30, 2008 19:11
"RPJr" gmail.com> wrote in message
news:jjgak.41$Dg2.18@newsfe05.lga...> Can anybody enlighten me as to the following problem with a possible
> cause....
>
>
> So short of dropping the bike off at the dealer for a diagnostic check I'm
> hoping someone on this board might have a solution. Bike is a '98 VFR800.
>
> Thanks for any ideas...
>
Rectifier. For some reason I remember reading about VFR electrical problems
and the word "rectifier" coming up.
Anyway, there is certainly a VFR specific forum someplace, they could
probably add more info.
And if you have an alarm, disconnect that sucker. Mine kills the battery.
I never use it.
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Author: saddlebagsaddlebag Date: Jun 30, 2008 19:29
On Jun 30, 10:11Â pm, "BryanUT" comcast.net> wrote:> "RPJr" gmail.com> wrote in message
>
> news:jjgak.41$Dg2.18@newsfe05.lga...
>>> Can anybody enlighten me as to the following problem with a possible
>> cause....
>
>> So short of dropping the bike off at the dealer for a diagnostic check I'm
>> hoping someone on this board might have a solution. Bike is a '98 VFR800.
>
>> Thanks for any ideas...
>
> Rectifier. Â For some reason I remember reading about VFR electrical problems
> and the word "rectifier" coming up.
Yup. The rectifier/regulator converts the ac from the alternator to
dc and regulates it to a near constant value over the rev range. This
is how the battery gets recharged while riding. These units were known
to have problems on VFRs. Sounds like the likely culprit.
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Author: bsr3997bsr3997 Date: Jun 30, 2008 19:52
On Jun 30, 10:34Â pm, "RPJr" gmail.com> wrote:> Thanks guy's....I'll look into this..
>
> "saddlebag" aol.com> wrote in message
>
> news:d5dce37c-1f5e-447e-8184-678c81425c9c@x41g2000hsb.googlegroups.com...
> On Jun 30, 10:11 pm, "BryanUT" comcast.net> wrote:
>
>
>
>
>>> "RPJr" gmail.com> wrote in message>
>>news:jjgak.41$Dg2.18@newsfe05.lga...
>
>>> Can anybody enlighten me as to the following problem with a possible
>>> cause....
>
>>> So short of dropping the bike off at the dealer for a diagnostic check ...
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Author: Nameless 1Nameless 1 Date: Jun 30, 2008 20:49
On Jun 30, 7:07�pm, "RPJr" gmail.com> wrote:
> So short of dropping the bike off at the dealer for a diagnostic check I'm
> hoping someone on this board might have a solution. Bike is a '98 VFR800.
VFR owners said that the rectifier regulator has a sensor wire on it,
in addition to the normal three AC inputs and the positive and
negative lead.
The sensor wire has to go up to the instrument panel to sense voltage
there, instead of sensing voltage right at the battery.
VFR owners would eliminate as many connectors in the charging system
as they could, in order to get rid of high resistance connections.
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Author: KeithKeith Date: Jul 2, 2008 12:28
"BryanUT" comcast.net> wrote in
news:e8KdnSxe_c_9D_TVnZ2dnUVZ_jOdnZ2d@comcast.com:
> Rectifier. For some reason I remember reading about VFR
> electrical problems and the word "rectifier" coming up.
Agreed; the rectifier is a known issue with the VFR, VTR, and
Blackbird. My 'bird has eaten one rectifier and one stator, the stator
having been taken out by the bad rectifier.
-Keith
'03 Blackbird
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Author: Le Chaud LapinLe Chaud Lapin Date: Jul 3, 2008 08:19
On Jun 30, 9:52Â pm, "bsr3...@ my-deja.com" my-deja.com> wrote:> On Jun 30, 10:34Â pm, "RPJr" gmail.com> wrote:
> The fact that it is showing 13 to 14 volts when running tells me the
> rectifier/regulator are probably working ok. Â What the dealer was
> talking about with the amp draw thing was that something was draining
> off the juice as fast as it was making it. Â Shut the bike off and put
> an ampmeter in the line. Â It goes in series, so any current passing
> through the battery must go through the meter. Â It should show almost
> zero amps with the bike shut off. Â The clock and other electronics may
> draw a few milliamps, but that is about it. Â If it shows more than
> that start disconnecting things till you find out where the current is
> going. Â Something is drawing...
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Author: bsr3997bsr3997 Date: Jul 3, 2008 11:29
On Jul 3, 11:19Â am, Le Chaud Lapin gmail.com> wrote:> On Jun 30, 9:52Â pm, "bsr3...@ my-deja.com" my-deja.com> wrote:
>>> On Jun 30, 10:34Â pm, "RPJr" gmail.com> wrote:
>> The fact that it is showing 13 to 14 volts when running tells me the
>> rectifier/regulator are probably working ok. Â What the dealer was
>> talking about with the amp draw thing was that something was draining
>> off the juice as fast as it was making it. Â Shut the bike off and put
>> an ampmeter in the line. Â It goes in series, so any current passing
>> through the battery must go through the meter. Â It should show almost
>> zero amps with the bike shut off. Â The clock and other electronics may
>> draw a few milliamps, but that is about it. Â If it shows more than
>> that start disconnecting things till you find out where the current is
>> going. Â Something is drawing a lot of current to discharge the battery
>> with it showing 13 volts at idle.>
> Do you live in a hot area? How often does cooling fan come on?
>
> There was some strangeness with my 2006 VFR-800 a few months ago
> where, after too _much_ idling in bumper-to-bumper traffic. I parked ...
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Author: Le Chaud LapinLe Chaud Lapin Date: Jul 3, 2008 12:53
On Jul 3, 1:29Â pm, "bsr3...@ my-deja.com" my-deja.com> wrote:> On Jul 3, 11:19Â am, Le Chaud Lapin gmail.com> wrote:>> On Jun 30, 9:52Â pm, "bsr3...@ my-deja.com" my-deja.com> wrote:>
>>> On Jun 30, 10:34Â pm, "RPJr" gmail.com> wrote:
>>> The fact that it is showing 13 to 14 volts when running tells me the
>>> rectifier/regulator are probably working ok. Â What the dealer was
>>> talking about with the amp draw thing was that something was draining
>>> off the juice as fast as it was making it. Â Shut the bike off and put
>>> an ampmeter in the line. Â It goes in series, so any current passing
>>> through the battery must go through the meter. Â It should show almost
>>> zero amps with the bike shut off. Â The clock and other electronics may
>>> draw a few milliamps, but that is about it. Â If it shows more than
>>> that start disconnecting things till you find out where the current is
>>> going. Â Something is drawing a lot of current to discharge the battery
>>> with it showing 13 volts at idle.>
>> Do you live in a hot area? How often does cooling fan come on?
>
>> There was some strangeness with my 2006 VFR-800 a few months ago ...
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