[s-cars] HVAC diagnosis/repair - not for the faint of heart

[Paul Heneghan]

-----Original Message-----
Date: Mon, 30 Jun 2008 00:50:46 -0400
From: Mike Fitton <rfitton at vt.edu>
Subject: [s-cars] HVAC diagnosis/repair - not for the faint of heart

>Okay, electric motors just don't "wear out" per se.  Yeah, there are
>moving parts and friction so they do wear out eventually, but these
>servos just don't face that kind of duty cycle.  They should last
>through the normal lifespan of the car in general.

Mine started giving trouble when the cars were seven or eight years old.
That's about 50% of the typical life of one of these cars. I wouldn't say
there are many 92-96 cars that are still on the originals.

>Enormous credit goes to a UK man whose name I don't even know.

That'll be me! I must also pass credit on to a chap called Marc who wrote
the
original write-up on the servo repair procedure. It can still be found on:
http://forums.audiworld.com/a6100/msgs/32811.phtml

I've done two cars now involving six servos and one head end. The cost
of having all that done at the dealer (with their policy of swapping in
new parts) would be approaching the value of one of those cars.

One of the servos that I fixed back in 2004 needed another service last
year.

Paul
1995 S6 Avant
1996 S6
both with working climate control!