May be cleaning the Idle Control Valve (ICV)?
Take it out, spray the inside with a CRC AFM cleaner, let it soak for a
while and put it back.

On Sat, Nov 14, 2020 at 9:28 AM David Boan <dboan@outlook.com> wrote:

> Hi Vanagon Types
>
> I have a question about the idle stabilizer.  My '85 starts and runs fine,
> including idle at about 900 rpm, with one exception.  After running down
> the road and coming to a stop the idle bounces around until the engine
> stalls.  When I restart it starts and idles fine, as though turning the
> ignition off and on reset something.  I tested the idle stabilizer using
> the procedure in Bentley (disconnect the unit and plug the connectors
> together) and it did not idle at all without the idle stabilizer.  I read
> up on it in Samba and the archive, but the problems people report with the
> stabilizer are poor or high idle and not exactly what I am experiencing.
> Should it still idle without the stabilizer, and if so, does that suggest
> what to look at?
>
> Thanks in advance for any suggestions.
>
> Dave B
> Boise
>