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

[William Jahn]

 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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