Date: Mon, 7 Feb 2005 17:28:45 -0600
Reply-To: John Rodgers <inua@CHARTER.NET>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: John Rodgers <inua@CHARTER.NET>
Subject: Re: 88 Vanagon thermostat question
In-Reply-To: <19442317050207082612ab38c8@mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
The check valve may be a safety of sorts in the event of a failed
thermostat in the closed mode. Sounds to me like it is made to bleed if
that is the case.
Just guessing.
Regards,
John Rodgers
88 GL Driver
]John Graham wrote:
>Over the weekend I changed out my thermostat as it just wasn't warming
>up very well in cold weather. The temp guage needle would seldom
>reach the mid point of the scale where it normally rides.
>
>When I removed the old thermostat, I realized that it had a little
>checkvalve feature on the outer ring - sorta like a little BB in a
>cage. The old thermostat had official VW and Audi stamps on it and a
>part number of 078 121 113F. I would guess that the mini checkvalve
>might have something to do with allowing air to escape the lower parts
>of the engine etc. Just guessing
>
>The new thermostat didn't have this checkvalve feature and had a part
>number of 025 121 113F. The box says it's made by Behr. Both
>thermostats were obtained from a reputable online vendor though
>several years apart. The new thermostat does seem to work better in
>keeping the engine temp up in the middle of the range, which is what I
>was after. I'm just curious as to whether it matters whether or not
>my thermostat has this little check valve
>
>Whatcha know?
>
>John Graham
>88 Westy
>Charlotte NC
>
>
>
>
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