Bizarre wash/wipe fault

[David Speir]

The windscreen washer on my '84 Porsche944 has developed a strange fault.
When I pull the stalk forward to spray the windscreen, the wipers go but no
water comes out. I've tried changing the washer pump which had no effect.
I then connected a multimeter in place of the washer pump and found that I
get 12V whenever I pull the stalk forward but then when I connect the pump
to the wires nothing happens and I don't get anything on the meter!! Any
ideas??
TIA


--
David Speir
(remove NO.SPAM to reply)

[Guy King]

The message <AWgbd.47471$ay5.43079@fe1.news.blueyonder.co.uk>
from "David Speir" <d.speir@NO.SPAM.blueyonder.co.uk> contains these words:

> I then connected a multimeter in place of the washer pump and found that I
> get 12V whenever I pull the stalk forward but then when I connect the pump
> to the wires nothing happens and I don't get anything on the meter!! Any
> ideas??

That sounds like there's a high resistance somewhere. It'd read as 12V
until you put some load on it and it'll drop like a stone.

--
Skipweasel.
Being superstitious brings bad luck

[Paul Cummins]

In article <AWgbd.47471$ay5.43079@fe1.news.blueyonder.co.uk>,
d.speir@NO.SPAM.blueyonder.co.uk (David Speir) wrote:

> When I pull the stalk forward to spray the windscreen, the wipers go
> but no water comes out.
> Any ideas??

Top the water up...?

--
Paul Cummins - Always a NetHead
Wasting Bandwidth since 1981

[Pete M]

In news:memo.20041013223859.3200F@0007148297.gst-group.co.uk,
Paul Cummins <agree2pay4uce@spam.vlaad.co.uk> decided to enlighten our
sheltered souls with a rant as follows
> In article <AWgbd.47471$ay5.43079@fe1.news.blueyonder.co.uk>,
> d.speir@NO.SPAM.blueyonder.co.uk (David Speir) wrote:
>
>> When I pull the stalk forward to spray the windscreen, the wipers go
>> but no water comes out.
>> Any ideas??
>
> Top the water up...?

Take it to your local VW dealership, it's probably the same set up on a
Scirocco...

--
Pete M

Ford Capri (ressurection starts soon)
Sierra V6 2.9 4x4 Twin Turbo Estate
COSOC #5
Scouse Git extraordinaire. Liverpool, Great Britain

[SteveH]

Pete M <pete.murray@blue-nopressedmeat-yonder.co.uk> wrote:

> In news:memo.20041013223859.3200F@0007148297.gst-group.co.uk,
> Paul Cummins <agree2pay4uce@spam.vlaad.co.uk> decided to enlighten our
> sheltered souls with a rant as follows
> > In article <AWgbd.47471$ay5.43079@fe1.news.blueyonder.co.uk>,
> > d.speir@NO.SPAM.blueyonder.co.uk (David Speir) wrote:
> >
> >> When I pull the stalk forward to spray the windscreen, the wipers go
> >> but no water comes out.
> >> Any ideas??
> >
> > Top the water up...?
>
> Take it to your local VW dealership, it's probably the same set up on a
> Scirocco...

Meeeeow! ;-)
--
Steve H 'You're not a real petrolhead unless you've owned an Alfa Romeo'
http://www.italiancar.co.uk - Honda VFR800 - MZ ETZ300
VW Golf GL Cabrio - Alfa 75 TS - Alfa 155 TS Lusso - COSOC KOTL
BoTAFOT #87 - BoTAFOF #18 - MRO # - UKRMSBC #7 - Apostle #2 - YTC #

[sid]

> > >
> > >> When I pull the stalk forward to spray the windscreen, the wipers go
> > >> but no water comes out.
> > >> Any ideas??

Try cleaning the contacts on the connector to the wash motor.. If you have
power to the motor you would hear the pump trying to operate.
If you have power then disconnect tubing and try a gentle blast of
compressed air to clear any blockage.




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[Douglas Payne]

"SteveH" wrote
>> Take it to your local VW dealership, it's probably the same set up on a
>> Scirocco...
>
> Meeeeow! ;-)
> --

> Alfa 155 TS Lusso -

Quiet tipoman!

Douglas

[TTT]

"David Speir" <d.speir@NO.SPAM.blueyonder.co.uk> wrote in message
news:AWgbd.47471$ay5.43079@fe1.news.blueyonder.co. uk...
> The windscreen washer on my '84 Porsche944 has developed a strange fault.
> When I pull the stalk forward to spray the windscreen, the wipers go but
> no
> water comes out. I've tried changing the washer pump which had no effect.
> I then connected a multimeter in place of the washer pump and found that I
> get 12V whenever I pull the stalk forward but then when I connect the pump
> to the wires nothing happens and I don't get anything on the meter!! Any
> ideas??
> TIA
Definately a high resistance in the feed or the earth. Check the earth
first by touching a wire from the negative or body to the battery earth. If
that doesn't work, do the same for the positive feed.

[David Speir]

I'm not so hot with the electrical side of things. Can you explain how to
check for the resistance in idiot terms...?
TIA




"TTT" <TTT@nospam.com> wrote in message
news:hMRbd.74$Ix4.11@newsfe3-gui.ntli.net...
>
> "David Speir" <d.speir@NO.SPAM.blueyonder.co.uk> wrote in message
> news:AWgbd.47471$ay5.43079@fe1.news.blueyonder.co. uk...
> > The windscreen washer on my '84 Porsche944 has developed a strange
fault.
> > When I pull the stalk forward to spray the windscreen, the wipers go but
> > no
> > water comes out. I've tried changing the washer pump which had no
effect.
> > I then connected a multimeter in place of the washer pump and found that
I
> > get 12V whenever I pull the stalk forward but then when I connect the
pump
> > to the wires nothing happens and I don't get anything on the meter!!
Any
> > ideas??
> > TIA
> Definately a high resistance in the feed or the earth. Check the earth
> first by touching a wire from the negative or body to the battery earth.
If
> that doesn't work, do the same for the positive feed.
>
>

[TTT]

"David Speir" <d.speir@NO.SPAM.blueyonder.co.uk> wrote in message
news:DeZbd.71177$ay5.39065@fe1.news.blueyonder.co. uk...
> I'm not so hot with the electrical side of things. Can you explain how to
> check for the resistance in idiot terms...?

David - what's happening is that at one of the connectors, there is enough
of a connection for the voltage to pass through, but when the pump tries to
draw any meaningful current, the voltage at the pump drops to zero. You can
confirm this by putting a voltmeter on the pump connections with the pump
still connected and operating the switch. If you're not sure, I'd get an
auto electrician to have a look - it shouldn't be too expensive - the worst
case is probably the switch.