Re: central lock questions

[Tony Lum <tlum@flash.net>]

At 10:55 AM 2/10/98 -0600, you wrote:
>Hi all,
>	some central locking questions for you pneumatic actuated gurus.  
>	
>	I'm having problems w/ a central locking system but not sure if 
>they're problems or just special features.  Here's what I'm trying to 
>find out.
>	
>1)	on mid to late 80's 4K/5K does the driver door have a 
>pneumatic actuated plunger or just the 3 plug VDO switch to control 
>the vacuum pump?

'85 4kq certainly does not-but you can retrofit one from the early '80-83
5k which does.

>2)	The vacuum pump seems to retain vacuum/pressure even after the 
>door locks have actuated.  This makes moving the locks up/down very 
>hard until vacuum/pressure has leaked down to atm.

Not easy, but then again not very hard either.

>3)	Can an alarm be fitted to this sytem for remote door lock/unlock. 
>That is, how long a 12v pulse is needed on the Hella or VDO pump to 
>completely actuate the locks.

Yes, if you retrofit the bipressure actuated switches in the drivers door.
Alarms usually (referring to the Ungo I have) have a jumper setting for a
longer pulse for German cars.  The Ungo requires a pair of auxialliary
relays wired to the 3 wires on the bipressure pump.


>	Why am I asking this.  Several reasons.  First, I have a 86 4K which 
>I want to put an alarm in w/ the lazy mans door un/lock feature. And 
>second, my friend's 90 Jetta w/ p/l blew its vacuum pump and I tried 
>mine in it  and it seems to hold too much pressure in the locks until 
>the system bleeds down, hence the hard to move locks.  It seems 
> the original pump must have vented as soon as the unit switched off.
>
>	Any thoughts? suggestions? Comments?
>
>	TIA.

If it vents it must be internal to the pump-I've never had this particular
problem.

HTH,

-Tony
__________________________________________________________________________

Tony Lum						1987 5000CS Turbo Quattro
Berkeley, California, U.S.A.                	1985 4000CS Quattro
Audi Owner/Driver/Mechanic by Necessity ;^)	1980 5000S  Sedan
__________________________________________________________________________