This message did not get posted on my first try, so I do it again:

Hello Volks,

My 87 Synchro Digifant has some warmup problems:

Cold start:
Somewhat reluctant to idle then fine, then little or no idle after 1 min,
then fine.

lukewarm start:
starts okay, after about 40 secs. sputters, doesn't want to go over 2200 rpm
for about a minute (even with full throttle in neutral); it's like driving
at idle speed for a moment, when I coach it to about 3000 RPM it works fine
and when the engine reaches temperature it's running fine as well.

hot start:
works fine, engine runs ok at working temperature.

I suspect the airflow control unit on the airfilter, but the resistance of
the thermostat checks out ok.

Any ideas?

Does anyone know of a good description who does what at which temperature
with the Digifant?

Bj�rn

78 Bus (Reimo and self-camperized)
(82 Vanagon Diesel)
87 Vanagon Synchro (est alia Camper)
95 Passat GLS Diesel