Looking for door lock vacuum pump...

[quk@sievers.com (Phil Payne)]

In message <339F0F98.5A08@pacbell.net> pierre@pacbell.net writes:

> The powered door lock system is not working on my
> 83'UrQ and my mechanic thinks it's the vacuum pump
> ( the one in the trunk ). Considering the price of a new one, 
> Does someone has a used one ? I don't know for sure, but I think 
> the early Coupe has the same pump ? 

The wiring and the hoses are the most likely causes of problems.  Are volts 
reaching the pump?   It's very common for the wiring in the door hinge area to 
break down.  If the pump is running, it might well be the piping - this is easy 
to check with a hand vacuum pump.
 
If it really _is_ the pump - the ur-quattro and the Coupe GT use (at least in 
Europe) the same part.  But it changes.
 
At first, both the Coupe and the urq used 813 862 257.  This changed to 
443 862 257B (also use 443 862 227A) on both cars - the Coupe on and after
85-D-080001, the urq on and after 85-D-901964.

--
 Phil Payne
 phil@sievers.com
 Committee Member, UK Audi [ur-]quattro Owners Club