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VW Mk3 Golf central locking pump staying on

 
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tazzag

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Since: May 09, 2006
Posts: 1



(Msg. 1) Posted: Tue May 09, 2006 7:05 am
Post subject: VW Mk3 Golf central locking pump staying on
Archived from groups: rec>autos>makers>vw>watercooled (more info?)

Hi

I have a VW Golf GTI 2.0 (MK3 - 96)

Problem I have is that the central locking pump in the boot is staying
on for hours sometimes all night (you can hear it whirring away) and
its draining my battery.

Do you think the pump needs replacing? or do you think it could be a
problem with the vacuum hoses (split / loose connection) making it work
extra hard?

All help would be appreciated!

Many Thanks

Tara

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Mark Randol

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Since: Mar 14, 2005
Posts: 45



(Msg. 2) Posted: Tue May 09, 2006 4:19 pm
Post subject: Re: VW Mk3 Golf central locking pump staying on [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

In article ,
says...
> I have a VW Golf GTI 2.0 (MK3 - 96)
>
> Problem I have is that the central locking pump in the boot is staying
> on for hours sometimes all night (you can hear it whirring away) and
> its draining my battery.
>
> Do you think the pump needs replacing? or do you think it could be a
> problem with the vacuum hoses (split / loose connection) making it work
> extra hard?

Does it keep going even after you disconnect and reconnect the power?

What if you pinch off or plug the vacuum port on the pump? What
happens? Can you operate the locks using a hand pump? (I'm not sure
this is possible, but I'd try it)

Some explanations of how it works...

There is a time out switch that should turn the pump off after about 30
seconds. Obviously that's busted.

There's also a switch that turns the pump off after it detects it's
sucked down all the locks. I THINK that would be a vacuum operated
switch in the pump, not a mechanical switch at the door latches. I
think so because unless my memory is hosed the pump will run even if all
the locks are down. So the mechanical switches would show 'locked', but
the pump will run for a second anyway until it senses enough vacuum.

Either that switch is also busted, and/or you have a vacuum leak.

I don't know if the two shutoff functions are linked, but it's
conceivable. That would mean repairing or replacing the pump if you
want it to work.

Please let us know what your further testing shows.

Mark
'95 Jetta GLS

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