Carrera stalling on start

[his15153]

I've searched the forum, but I can only find posting on this problem for SC's. Anyways, my 84 Carrera stalls during cold starts. When it starts up it idles really low and then stalls. By the time I have backed out of the driveway, the car will start idling normally, although it does seem to idle a bit low at around 500 RPM.

I've ruled out a vacuum leak, because I did have a leak in one of the vacuum hoses, but the problem hadn't started until a little while after I replaced it. I can't seem to find any other leaks.