[T3] 73 auto trans type 3 ARR ?

[William Jahn]

 Thank you for checking the hose size, I know the hoses are run
differently. I always make certain the AAR is closed before setting the
idle speed.

 Last time I set the idle was a while back but it can't change on its own
and the AAR was closed. The reason I put power to the AAR engine off was to
see if it would close and it did. With the hose to the oil bath off I timed
how long it took to not be able to blow through the hose. It was about 6
minutes , I also could not draw air through it.

 I checked if the AAR had running voltage it does , the red lead fixed to
the AAR is not broken or shorted. For now all I can do is let the engine
warm up and check if it closes and if not try the mechanical one . There is
no way I will attempt to repair the electric unit a second time unless I
have no other choice, even then it's a real battle to get it apart and back
together.

 For me the most difficult part is this old 73 is my only car so everything
I need to fix I have a few days to do it or I have no way of getting to a
few stores I need to , The good part is I have some good spare parts and a
garage to work on it. Too bad there are no good electric AAR's I had one
spare but it was bent too badly to use.

On Thu, Jun 8, 2023 at 8:23 PM Jim Adney <jadney at vwtype3.org> wrote:

> On 7 Jun 2023 at 14:20, William Jahn wrote:
>
> > I need to check if the hoses are the same size as the electric
> > one.
>
> I checked, and the ports are the same diameter on the mech/MT and elec/AT
> AARs, but the inlet orientations are different.
>
> > Before I dive in I first need to check if the electric one is in fact not
> > closing. I did check it running 12 volts to it and it did close .
>
> The way to check them is to close off the AAR inlet port with the engine
> running. If the idle speed drops, it's open, if it doesn't drop, it's
> closed. You
> will feel suction either way, so ignore that.
>
> >  I did this a month ago . If it is closing then I need to find out why
> the
> > idle stays at 1500 RPM and never seems to drop.
>
> I agree. if it closes, the idle speed should be lower, unless it's been
> set
> improperly.
>
> The idle speed must be set with the AAR closed. If the engine is warm but
> the AAR is not closing, you can fake it by shutting off the AAR inlet with
> your
> thumb while you set the idle speed.
>
> --
> *******************************
> Jim Adney, jadney at vwtype3.org
> Madison, Wisconsin, USA
> *******************************
>
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