[T3] 73 auto trans type 3 ARR ?

[Jim Adney]

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.

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Jim Adney, jadney at vwtype3.org
Madison, Wisconsin, USA
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