[urq] heater core

[Ben Swann]

In theory, a good heater valve should stop the flow with the valve closed.

My experience is even when fully closed, they still tend to pass water flow and act if
the heat is on.  I had to install a manual cutoff valve for summer operation as the warm
core counteracts the AC.  This was even after installing new heater valves, BTW and
verifying full closure with the cable - lock tight but still letting water flow through.
I think the newer pneumatic valves work better.  It might also be whoever AUDI had
making replacement valves was not doing them right - I tried several.

In a sense the answer to your question is the valve is faulty, and my add to that is
they all tend to be faulty.

Ben

[Date: Thu, 22 Apr 2010 09:36:24 -0600
From: "Brandon Rogers" <brogers at terrix.com>
Subject: [urq] heater core
To: <urq at audifans.com>
Message-ID: <EE7BB527DDA245769F5077C343364009 at BCROGERS>
Content-Type: text/plain;	charset="us-ascii"

Guys-
If the temp slider is to no heat/full cold - should the heater core still warm up?  Or
does a warm heater core mean faulty heater valve?
 
Brandon
'84 ur

------------------------------

Message: 6
Date: Thu, 22 Apr 2010 11:34:59 -0400
From: Louis-Alain Richard <larichard at plguide.com>
Subject: Re: [urq] heater core
To: "'Brandon Rogers'" <brogers at terrix.com>,	<urq at audifans.com>
Message-ID: <006d01cae231$6160d010$24227030$@com>
Content-Type: text/plain; charset="Windows-1252"

Last time I looked, air pass through the heater core all the time, so the valve must be
perfectly tight to stop hot coolant flow.

Time for a new valve, I guess.

Louis-Alain

-----Message d'origine-----
De?: urq-bounces at audifans.com [mailto:urq-bounces at audifans.com] De la part de Brandon
Rogers
Envoy??: 22 avril 2010 11:36
??: urq at audifans.com
Objet?: [urq] heater core

Guys-
If the temp slider is to no heat/full cold - should the heater core still warm up?  Or
does a warm heater core mean faulty heater valve?
 
Brandon
'84 ur
]