[T3] Head lamps on left or right a idle , turn signals lash fast.

[William Jahn]

 Just to confirm, yes the turn signals flash too fast at idle. I need to
create this so I can check the system voltage at the fuse box while not
driving. I had the chance when it happened and got home but I was too
tired. Wife is back in the hospital and I left late and it was dark. Trying
to check this while driving here with the way people drive, never using
their signals or following any sort of rules is impossible. So far when
this happens if I place the car in neutral and the voltage raises enough it
takes a second and the flashers work as they should . Doing this however is
a pain.

On Fri, Jul 7, 2023 at 8:47 AM William Jahn <willjahn975 at gmail.com> wrote:

>  Just for reference I have a VDO  voltmeter under the dash that is
> connected to a (key on) fuse of the fuse box. I checked its calibration
> with a good DVOM connected to the battery because there is a calibration
> screw in the gauge.
>
>  It's only when driving city streets, in this case it's 50% running at
> idle. Auto trans in drive 850 RPM. As long as the voltmeter reads above 12
> volts this issue does not exist. The voltmeter has from 8 volts to 16 in 1
> volt graduations which are evenly spaced from 10 to 14 volts. Once it drops
> just below 12 volts ( on the gauge I have to guess and say 11.7 volts.   A
> much more accurate reading would be a voltmeter right off the battery which
> I didn't have the chance to do. It's a 3 mile one way drive so I expect the
> sitting 50% of the time to consider this normal. Driving with steady speeds
> where it's not at idle for 50% of the time this issue does not exist.
>
>  I didn't notice I wrote lash in the title.
>
> On Fri, Jul 7, 2023 at 5:47 AM Jim Adney <jadney at vwtype3.org> wrote:
>
>> Not sure what your problem is, or what you're asking. I suggest you
>> re-read
>> and correct your typos before sending.
>>
>> Are you complaining that your turn signals go too fast at idle? Yes, that
>> can
>> be a problem at times, due to low voltage. Usually, a good battery will
>> hold
>> the voltage up for a few minutes while idling, but only after the
>> charging
>> system has had enough time at speed to bring the battery up to full
>> charge.
>>
>> Right after starting the car, the battery will always be somewhat
>> depleted, so
>> it will need some recharging. This won't happen at idle; the generator
>> needs
>> to be brought up to a medium speed for a minute or so to recharge the
>> battery.
>>
>> You can test this by watching the voltage at the fuse box to see how high
>> it
>> needs to be for the turn signals to work correctly. Do this by bringing
>> the
>> RPMs up slowly while watching the voltage and the turn signals. Once you
>> know the threshold voltage, let the generator recharge the battery by
>> driving,
>> and then watch the voltage decline when you come back to idle.
>>
>> What is that voltage threshold for your car, and how quickly does the
>> system
>> fall back to that voltage after you drop back to idle?
>>
>>
>> On 6 Jul 2023 at 21:40, William Jahn wrote:
>>
>> > I removed the right side just to take a look since this is the side that
>> > was hit years ago and the body shop removed that fender. I see the
>> round to
>> > a three way connector . I checked and have a good ground but the turn
>> lamp
>> > wire harness no longer has the rubber cover , I just see the wires.
>> >
>> >  It does this on both left and right sides and only at an idle , once I
>> > move and the voltage is back to 14 volts it all works. I read a bit less
>> > than 12 volts when this happens. With the head lamps off there is no
>> issue.
>> > I charged the battery. It was a bit low after this. Most of the time
>> even
>> > with a fully charged battery it still does this. A year ago it didn't do
>> > this and even now it still cranks and starts fine even with the battery
>> at
>> > rest reading 12.34 volts.
>> >
>> >  No idea what changed in a year. Or maybe I just don't recall. Maybe it
>> > did.
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>>
>> --
>> *******************************
>> Jim Adney, jadney at vwtype3.org
>> Madison, Wisconsin, USA
>> *******************************
>>
>> _______________________________________________
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