[Supras] Heater issue

[Jeff]

Kurt - I recently asked the same thing and Mike Bringle was kind enough to
respond with the following - hope it helps.

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

Sounds like the classic heater VSV problem.  Happened to me.  Easy
fix, cheap if you get a used one, semi cheap if you use the one for the
merc:

http://www.rclambert.com/supra/vsv.htm


-Mike
89T BST++
http://www.CygnusX1.net/supra

At 06:57 PM 9/8/2006, Jeff wrote:
>The heater control valve just stopped working in my 91 turbo. If I
>turn the heat up to 85 the valve doesn't open. If I connect the
>vacuum that goes to the switch directly to the top of the valve it
>opens. So I'm thinking it's either the valve or the HVAC controller.
>
>Does anyone know what the voltage should be at the heater control
>valve when the temperature is set to 85 ( I think that temperature
>is suppose to force the valve all the way open regardless of the
>cabin temp)? Is there a test voltage that can be applied to the
>heater control valve?
>
>Assuming the worst...
>
>Can these be repaired?
>Are they expensive?
>Are they still available?
>Can I use one from some other Toyota?
>
>Thanks in advance.
>
>JP
>














----- Original Message -----
From: "Kurt" <kurt_20120 at yahoo.com>
To: <supras at supras.com>
Sent: Friday, October 13, 2006 6:42 AM
Subject: [Supras] Heater issue


> Hi,
>      I recently noticed that after having the heat on at maximum for about
> 30 minutes this morning (85 degrees), if I cut it back even just 1 NOTCH
to
> 84, it got completely cool. Why did 1 degree make so much difference??
>
> Thanks,
> Kurt
>
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