Haven't seen that particular type of idle problem here
before. I thought idle problems tended to be high ones.
Still, I'd purge this car's cooling system and also be in
the troubleshooting chart under "Emission Controls" in my
Chilton's. It has a chart dedicated to "Idle Control"
problems. For what you describe for a 92-95 Civic, it points
to the problem most likely being the Fast Idle Thermo Valve.
Which may be cooled by the cooling system... Then it points
to the Idle Air Control Valve, which I think definitely is
cooled by the cooling system.

Another chart, but for coded (that is, check engine light
on) idle problems points to the engine coolant temp sensor,
like you were saying...

"disallow" <loewen_t at yahoo.ca @> wrote
> Sorry for the lack of clarity....
>
> When started from cold, it takes the car 10-15 seconds to
find the 'high
> idle' which should be at around 1500rpms. Instead, it
sits at about
> 600rpms and almost stalls.
>
> After 10-15 seconds, it seems to be fine.