Thanks John. It would be easier if it was RPM related not time. I'll see what i can diagnose.
Mike On Mon, Dec 14, 2015 at 10:40 AM, John Sroka <[email protected]> wrote: > From your description it does sound like a circuit is opening up (failing) > in the charging system when everything is warmed up and under load (lights > on). The trick is going to be getting the problem to recur, then testing > your charging system before things cool back down. Rob and Dave’s VW page > has this write-up on testing: > > > > Rob and Dave’s VW page http://www.vw-resource.com/generator.html > > > > Be real careful of the spinning pulleys/belts while measuring voltages. > If you do further web searches you will find tips on testing the > generator brushes by sticking your finger through the vent holes, I’d > suggest using a stick or another expendable item instead… > > > > Let us know what you find. > > > > > > > > *From:* [email protected] [mailto:[email protected] > <[email protected]>] *On Behalf Of *Mike Morehouse > *Sent:* Saturday, December 12, 2015 2:07 PM > *To:* VintagVW > *Subject:* Re: [vintagvw] Re: Generator Light Issue on 72 Bug > > > > John, thanks. Do you have alink to the article about gen light on at > highway speeds? > > > > Mike > > > > On Sat, Dec 12, 2015 at 3:13 PM, John Sroka <[email protected]> wrote: > > Hi Mike. The charging system could work fine when cool and then fail > when warmed up. A Google search shows that the gen light coming on at > highway speeds is not an uncommon problem, these same articles have good > information on diagnosis and correction. Maybe plan a 20 mile round trip > on the interstate in daylight (headlights on to provide a load) and see if > you can reproduce the symptom. You can then isolate the problem to > regulator, generator or wiring. > > > > On Sat, Dec 12, 2015 at 12:19 PM, Mike Morehouse <[email protected]> > wrote: > > After trickle charging the battery over the last few days till I got a > green light indicating it was charged, the battery output with the engine > off is 12.65. I started the bug and let it idle. No gen light. Revved up > the engine and checked the voltage at the battery and it was reading about > 14.3 vdc. > > Wouldn't this indicate that the generator is ok? > > What to check next? > > Thanks Mike > > Mike Morehouse > > On Dec 12, 2015 1:30 PM, "stokester" <[email protected]> wrote: > > The first thing I would do is use a meter on it to see the actual output > voltage of the generator. > > > > Nick > > > > On Friday, December 11, 2015 at 9:54:34 AM UTC-5, mike morehouse wrote: > > Good morning. > > > > I need a little advice with a generator light issue on my stock 72 Bug > with generator. I drive my Bug mostly short trips in town - errands, > church, work, etc...both day and night driving. Car is stock with OEM > generator. No added accessories. Battery was replaced in 2012 and starts > car fine. > > > > I never have any generator light issues on normal trips in town. Last > night I took it up the interstate on about a 22 mile trip at about 65 mph > and at the 20 mile mark the gen light came on. Car contined to run fine. > Got to my destination and picked up a play script and got back in the car > to make the 22 mile trip back home. Gen light stayed on the whole time. > FYI, I did notice left and right turn signals were flashing very rapidly > when I put them on on way home. > > > > As I got close to home it did appear that headlights were getting dimmer. > Made it home OK. Pulled in garage and left engine running to look at > headlights. They did look dim. Shut engine off. Checked fan belt. It was > intact and seemed to have plenty of tension. I connected my Harbor Freight > trickle charger to battery and left it on over night. It is still charging > this am. If I do start car this am, headlights seem fine and there is no > gen light on. > > > > IIRC, the last time I made his same length trip, the same thing happened. > > > > Why would I have gen light issues on a 20 mile trip at 65 mph when I never > see that around town? > > > > Would a 30 or 35 minute trip cause a gen problem that a 10 minute trip > around town might not? > > > > I guess what I am saying is no gen light occurrences on numerous local > trips but 2 consecutive light issues on 30 min trip up interstate. > > > > I'd welcome your thoughts as this makes me wary of taking an road trips in > the Bug. > > > > If I didn't give enough info on symptoms please let me know as I do need > some help. > > > > Thanks Mike Morehouse in Alabama > > -- > Visit the VintagVW archives at > http://www.mail-archive.com/[email protected] > --- > You received this message because you are subscribed to the Google Groups > "VintagVW - Air Cooled Volkswagen Discussion List" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at https://groups.google.com/group/vintagvw. > For more options, visit https://groups.google.com/d/optout. > > -- > Visit the VintagVW archives at > http://www.mail-archive.com/[email protected] > --- > You received this message because you are subscribed to the Google Groups > "VintagVW - Air Cooled Volkswagen Discussion List" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at https://groups.google.com/group/vintagvw. > For more options, visit https://groups.google.com/d/optout. > > > > -- > Visit the VintagVW archives at > http://www.mail-archive.com/[email protected] > --- > You received this message because you are subscribed to the Google Groups > "VintagVW - Air Cooled Volkswagen Discussion List" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at https://groups.google.com/group/vintagvw. > For more options, visit https://groups.google.com/d/optout. > > > > -- > Visit the VintagVW archives at > http://www.mail-archive.com/[email protected] > --- > You received this message because you are subscribed to the Google Groups > "VintagVW - Air Cooled Volkswagen Discussion List" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at https://groups.google.com/group/vintagvw. > For more options, visit https://groups.google.com/d/optout. > > -- > Visit the VintagVW archives at > http://www.mail-archive.com/[email protected] > --- > You received this message because you are subscribed to the Google Groups > "VintagVW - Air Cooled Volkswagen Discussion List" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at https://groups.google.com/group/vintagvw. > For more options, visit https://groups.google.com/d/optout. > -- Visit the VintagVW archives at http://www.mail-archive.com/[email protected] --- You received this message because you are subscribed to the Google Groups "VintagVW - Air Cooled Volkswagen Discussion List" group. 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