[T3] 73 SB atuo trans electric AAR ?

[William J]

 It's amazing that it's worked since at least 85 when I got this car and 
never had an issue. Can't say I know where the deposites came from either 
from the IAD pipe of the top of the oil bath . I have now idea what it looks 
like inside the valve , I assume the electric unit heating element is at the 
bottom so ATF wouldn't harm it.if it makes it's way down into there.

  If it does not free up then all I can do is keep the idle up at start up 
so it does not stall which it has done twice this week .

 Any drawings or photo's of the insides?
----- Original Message ----- 
From: "Jim Adney" <jadney at vwtype3.org>
To: <type3 at vwtype3.org>
Sent: Sunday, July 30, 2017 12:12 PM
Subject: Re: [T3] 73 SB atuo trans electric AAR ?


> On 30 Jul 2017 at 11:56, William J wrote:
>
>> In the last few months when I start the car and it's in park the idle
>> is 900 RPM then after about 2 minutes it comes up to 1300 RPM then
>> after another 2 minutes it drops back down to 900 RPM .
>
> Sounds like it has gotten a bit sticky, so it sticks in the (warm) 
> position it was
> in the last time you shut down the engine, then once it warms up enough to
> free itself, it's already warm enough that it won't open fully.
>
> If you have time, the solution may be to remove it and fill it with ATF. 
> Then
> power it with your battery charger thru a few warm/cool cycles and then
> dump out the ATF. Diluting the ATF with some acetone or mineral spirits
> might also help dissolve the stuff in there that's keeping it sticky. You 
> may
> want to repeat this several times, until the ATF comes out clean.
>
> The electrically heated AARs have a record of seizing up, presumably from
> deposits in them. I don't know any other way to solve this problem, and 
> this
> doesn't always work. You have a good chance, since yours is still moving;
> the odds get much worse once they get completely stuck.
>
> -- 
> *******************************
> Jim Adney, jadney at vwtype3.org
> Madison, Wisconsin, USA
> *******************************
>
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