'76 2.0 idle problems (wants to stall) Options

[type4org]

Hi everyone,

I just purchased my very first 914 (yay!), a low-mileage 1976 with the original D-Jetronic-powered 2.0. Since I had time to do something utterly crazy I drove the car all the way from the place of purchase (Salem/OR) to where I live in Virginia, 3 days straight...

Anyway, it does have one niggling problem: The idle is so low that
the car wants to die every single time I let go of the gas pedal, and
it barely catches itself most of the time.

The engine is the original GC 2.0 with the original fuel injection.
This is my first 914 and my first D-Jetronic car, I am used to the
1.8 L-Jetronic engine which my '74 412 has, and with those I would
know where to adjust the idle speed.

I know there's some underlying problem somewhere, and any ideas are
greatly appreciated, but I am also looking for a band aid that gets
the idle up so I can use the car, this is quite urgent for me since
the 914 is currently my only car. Where do I adjust idle speed on
that engine?

I'm not sure if the effects would be the same on the 2.0, but from
lurking for a long time on the VW Type 3 list I know that faulty
voltage regulators and low system voltages can make the D-Jetronic
run very poorly. The reason I am mentioning this is that the volt
meter gauge in the middle console seems to indicate low voltage. It
shows 13 volts with the engine running and nothing switched on, but
even at highway speeds switching on the headlights pushes it down to
12. The turn signals causes it to dance between 11.5 and 12.5 in sync
with the signals. Maybe there is a connection? Yes, I do realize that
gauge isn't all too precise, but it seems to me with the alternator-
driven system the voltage should really stay stable at 13-13.5 V.

Any (emergency) help appreciated! (IMG:style_emoticons/default/smile.gif)